# List of Greek and Latin roots in English/S

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## S

| Root | Meaning in English | Origin language | Etymology (root origin) | English examples |
| sacc- | bag | Greek | σάκκος (sákkos) | sack |
| sacchar- | sugar | Greek | σάκχαρ, σάκχαρον (sákkharon) | disaccharide, heteropolysaccharide, homopolysaccharide, lipooligosaccharide, lipopolysaccharide, monosaccharide, oligosaccharide, pentasaccharide, polysaccharide, saccharin, trisaccharide |
| sacr-, -secr- | sacred | Latin | sacrare, from sacer (genitive sacri) | consecrate, desecrate, sacrament, sacred, sacrosanct |
| sagac- | wise | Latin | sagax, sagacis | sagacious, sagacity |
| sagitt- | arrow | Latin | sagitta | sagittal plane, Sagittaria |
| sal- | salt | Latin | sal, salis, salere, salarium | salary, salinity |
| sali-, -sili-, salt- | jump | Latin | salire, saltus | assail, assailable, assailant, assailment, assault, assaultive, consilience, desultory, dissilience, dissilient, exult, exultant, exultation, insult, insultation, irresilient, resile, resilement, resilience, resiliency, resilient, result, resultant, salacious, salacity, salience, salient, sally, saltando, saltant, saltation, saltatorial, saltatory, saltigrade, saltire, salto, saltus, sault, sauté, sauteuse, sautille, sautoir, somersault, soubresaut, subsultory, transilience, transilient |
| salic- | willow | Latin | salix, salicis | salicin |
| salping- | trumpet | Greek | σάλπιγξ, σάλπιγγος (sálpinx, sálpingos) | endosalpingiosis, hysterosalpingography, salpiglossis, salpinx |
| salu- | health, welfare | Latin | salus | salubrious, salubrity, salutary, salute |
| salv- | save | Latin | salvus, salvare | salvage, salvation, salve |
| san- | healthy | Latin | sanus | insane, insanity, sanatorium, sane, sanitarian, sanitarium, sanitary, sanitation, sanity |
| sanc- | holy | Latin | sancire (past participle sanctus) | sacrosanct, saint, sanctify, sanction, sanctuary |
| sanguin- | blood | Latin | sanguis, sanguinis | consanguinity, sanguinary, sanguine |
| sapi-, -sipi- | taste, wise | Latin | sapere "to have a taste, be wise", related to sapor "taste, flavor" | insipid, insipience, sapient |
| sapon- | soap | Latin from Frankish | sapo, saponis | saponification |
| sapphir- | a precious stone | Greek from Hebrew | σάπφειρος (sáppheiros) | sapphire, sapphirine |
| sapr- | rotten | Greek | σήπειν, σαπρός (saprós), σαπρότης | sapraemia, saprogenic, saprophagous, saprophyte, saprotrophic |
| sarc- | flesh | Greek | σάρξ, σαρκός (sárx, sarkós) | perisarc, sarcasm, sarcastic, sarcocele, sarcoid, sarcoidosis, sarcoma, sarcophagus, Sarcopterygii, sarcosine, sarcosinemia, sarcosome |
| sarc- | tailor | Latin | sartor "tailor", from sarcire "to mend" | consarcination, sartor, sartorial, sartorius |
| sati- | enough | Latin | satis | asset, sate, satiate, satiety, satisfy, saturate |
| saur- | lizard, reptile | Greek | σαύρα (saúra), σαῦρος (saûros) | dinosaur, Saurischia, sauropod |
| sax- | rock | Latin | saxum | saxatile, saxicavous, saxicoline, saxifrage, saxifragous |
| scab- | scratch | Latin | scabere | scabies |
| scal- | ladder, stairs | Latin | scala | scalar, scale |
| scalen- | uneven | Greek | σκαληνός (skalēnós) | scalene, scalene muscles, scalene triangle, scalenohedron |
| scand-, -scend-, scans-, -scens- | climb | Latin | scandere | ascend, ascendency, ascendent, ascension, ascent, condescend, condescendence, condescension, descend, descendent, descension, descent, scansion, transcend, transcendence, transcendent, transcendental |
| scandal- | snare | Greek | σκάνδαλον (skándalon), σκανδαλίζω (skandalízō) | scandal, scandalize |
| scap- | shaft | Greek | σκᾶπος (skâpos) | scape, scapus |
| scaph- | anything hollow, bowl, ship | Greek | σκάφη, σκάφος | Scaphirhynchus, scaphoid bone, scaphopod |
| scat- | dung | Greek | σκῶρ, σκατός (skôr, skatós) | scatemia, scatology, scatoma, scatomancy, scatophagy, scatoscopy |
| sced- | scatter | Greek | σκεδαννύναι (skedannúnai), σκέδασις (skédasis), (skedastós), (skedastikós) | heteroscedastic, homoscedastic |
| scel- | leg, thigh | Greek | σκέλος, σκέλεος (skéleos) | isosceles, triskele, triskelion |
| scen- | booth, tent | Greek | σκηνή (skēnḗ) | parascenium, proscenium, scene, scenic, scenography |
| scept-, scop- | look at, examine, view, observe | Greek | σκέπτεσθαι (sképtesthai), σκέψις (sképsis), σκέμμα, σκεπτικός (skeptikós), σκοπεῖν (skopeîn), σκοπός, σκοποῦ (skopós) | Abroscopus, diascopic, diascopy, endoscope, endoscopic, endoscopy, epidiascope, episcope, episcopic, gastroscopy, kaleidoscope, macroscopic, microscope, microscopic, panendoscopy, periscope, periscopic, scope, scopophobia, skeptic, stereoscopic, stereoscopy, stethoscope, telescope, telescopic, Telescopium |
| schem- | plan | Greek | σχῆμα (skhêma) | schema, schematic, schematism, schematize, scheme |
| schid- (ΣΧΙΔ) | split | Greek | σχίζειν (skhízein), σχιστός (skhistós), σχίσις (skhísis), σχίσμα (skhísma), σχίζα | diaschisis, diaschisma, schisis, schism, schisma, schismatic, schizocarp, schizogamy, schizogony, schizoid, schizophrenia, schizotrichia |
| sci- | shade, shadow | Greek | σκιά (skiá), σκιάς | sciamachy, sciaphobia |
| sci- | know | Latin | scire | conscience, conscious, conscientious, omniscious, omniscient, prescient, science, scienter |
| scind-, sciss- | split | Latin | scindere | rescind, scissors |
| scler- | hard | Greek | σκέλλειν (skéllein), σκληρός (sklērós), σκληρότης (sklērótēs) | sclera, sclerectomy, scleredema, sclereid, sclerema, sclerenchyma, sclerite, scleritis, scleroderma, sclerophyll, sclerophyllous, sclerosis, sclerotic, sclerotium, sclerotize |
| scolec- | worm | Greek | σκώληξ, σκώληκος (skṓlēx, skṓlēkos) | scolex |
| scoli- | crooked | Greek | σκολιός (skoliós), σκολιότης | scoliokyphosis, scoliosis |
| scombr- | mackerel | Greek | σκόμβρος (skómbros) | scombrid, scombroid |
| scop- | | Greek | | |
| scot- | darkness | Greek | σκότος, σκότου, σκοταῖος | scotobiology, scotochromogen, scotogenic, scotograph, scotoma, scotoperiod, scotophase, scotophilia, scotophilic, scotophobe, scotophobia, scotophobic, scotophobotaxis, scotopic, scotoscope, scotosis, scototactic, scototaxis, scototherapy |
| scrib-, script- | write | Latin | scribere, scriptus | describe, inscribe, manuscript, prescribe, scribble, scribe, script, scripture, subscribe |
| scrupl- | uneasiness | Latin | scrupus "sharp stone" | scruple, scrupulous, unscrupulous |
| sculp- | carve | Latin | sculpere, sculptus | insculp, resculpt, sculp, sculpsit, sculpt, sculptile, sculptor, sculptress, sculptural, sculpture |
| scut- | shield | Latin | scutum | scute |
| scyph- | cup | Greek | σκύφος (skúphos) | scyphoid, Scyphozoa, scyphus |
| se-, sed- | away, apart | Latin | se | secede, sedition, seditious, seduce |
| seb- | tallow | Latin | sebum | sebaceous, sebum |
| sec-, sect-, seg- | cut | Latin | secare | secant, section, segment |
| sed- | settle, calm | Latin | sedare, sedatus | sedative |
| sed-, -sid-, sess- | sit | Latin | sedere, sessus | assiduous, insidious, obsession, possess, preside, president, reside, resident, sedentary, sediment, sedimentary, sedulity, sedulous, session, subside, supersede |
| sedec- | sixteen | Latin | sedecim | sedecimal |
| seget- | in cornfields | Latin | segetum | |
| sei- | shake | Greek | σείειν (seíein), σεισμός (seismós), σεῖστρον (seîstron) | aseismic, microseism, microseismic, paleoseismology, seism, seismic, seismogram, seismograph, seismology, seismometer, seismonasty, sistrum, teleseism, teleseismic |
| selen- | moon | Greek | σελήνη (selḗnē) | paraselene, selaphobia, Selene, selenium, selenocentric, selenography, selenology |
| sell- | saddle, seat | Latin | sella | sella turcica |
| sema- | sign | Greek | σῆμα (sêma) | aposematic, asemasia, asemia, asemic, pentaseme, polyseme, polysemic, polysemous, polysemy, semantics, semaphore, semasiology, sematic, seme, sememe, semiotic, tetraseme, triseme |
| semi- | half | Latin | semis | semiannual, semicolon, semiconductor, semiconscious, semifinal, seminatural |
| semin- | seed | Latin | semen, seminis | insemination |
| sen- | old man | Latin | senex, senis | senator, senescent, senile, senility, senior |
| sen- | six each | Latin | seni | senary |
| sent-, sens- | feel | Latin | sentire, sensus | assent, consensus, consent, dissent, resent, scent, sensation, sense, sensible, sensitive, sensory, sentence, sentient, sentience, sentiment |
| sep- | rot | Greek | σήψ (sḗps), σήπειν (sḗpein), σηπτός (sēptós), σηπτικός (sēptikós), σῆψις (sêpsis), σηπία (sēpía) | antisepsis, antiseptic, asepsis, aseptic, sepia, sepsis, septic |
| sept- | fence, partition, enclosure | Latin | saeptum | transept |
| sept- | seven | Latin | septem | septennial |
| septen- | seven each | Latin | septeni | septenary |
| septim- | seventh | Latin | septimus | septimal, septime |
| septuagen- | seventy each | Latin | septuageni | septuagenary |
| septuagesim- | seventieth | Latin | septuagesimus | septuagesima, septuagesimal |
| septuagint- | seventy | Latin | septuaginta | Septuagint |
| sequ-, secut- | follow | Latin | sequere, from sequi, see also secutus | consecutive, consequence, ensue, non sequitur, obsequious, prosecute, pursue, second, sequel, sequence, subsequent |
| ser- | silk | Greek | σήρ (sḗr), σηρικός | sericin, serigraph |
| ser- | sow | Latin | serere, satus | disseminate, dissemination, insemination, postseason, preseason, sation, sative, season, seasonable, seasonal, semen, semenuria, seminal, seminar, seminarian, seminary, semination, seminiferous |
| ser- | attach, join | Latin | serere, sertus | assert, assertion, assertive, curviserial, desert, desertion, desertrix, dissert, dissertation, dissertator, exert, exertion, insert, insertion, multiseriate, reassert, reassertion, rectiserial, semidesert, serial, seriate, seriatim, series, sermon, uniseriate |
| ser- | whey | Latin | serum | serac, serosa, serous, subserous |
| ser- | late | Latin | sērus | serein, serotine, serotinous, serotiny, soiree |
| serp- | crawl, creep | Latin | serpere, serptus | serpent |
| serr- | saw, saw-toothed | Latin | serra, serrare | biserrate, serrate, serration, serrature, serriform, serrulate, sierra, sierran |
| serv- | save, protect, serve | Latin | servare | conserve, deserve, observe, preserve, reserve, servant, service, servile, servitude, subservient |
| sesqui- | one and a half | Latin | sesqui | sesquialteral, sesquicentennial, sesquipedal, sesquiplicate, sesquitertian |
| set- | bristle, hair | Latin | saeta | seta, setose |
| sever- | stern, strict, serious | Latin | severus | asseverate, asseveration, perseverance, perseverant, perseverate, perseveration, perseverative, persevere, severe, severity |
| sex- | sexual | Latin | sexus | sexual, sexuality, sex, Sexual Intercourse (abbr. "sex) |
| sex-, se- | six | Latin | sex | semester, sexangle, sexangular, sexavalent, sexennial, sexennium, sexireme, sexivalent, sexpartite, sexradiate, sextain |
| sexagen- | sixty each | Latin | sexageni | sexagenarian, sexagenary |
| sexagesim- | sixtieth | Latin | sexagesimus | Sexagesima, sexagesimal |
| sext- | sixth | Latin | sextus | bissextile, bissextus, semisextile, sestet, sestina, Sext, sextain, sextan, sextans, sextant, sextary, sextic, sextile, sextillion, siesta, sixte |
| sibil- | hiss | Latin | sibilus, sibilare | sibilance |
| sicc- | dry | Latin | siccare "to dry", from siccus "dry, thirsty" | desiccate, desiccation, sec, siccative |
| sicy- | cucumber | Greek | σίκυος (síkuos) | Sicyos |
| sider- | iron | Greek | σίδηρος (sídēros), σιδήρεος | siderodromophobia, siderophile |
| sider- | star | Latin | sidus, sideris | sidereal |
| sigm- | S, s | Greek | σίγμα, σῖγμα (sîgma) | sigma, sigmatism, sigmatropic, sigmoid, sigmoidoscopy |
| sign- | sign | Latin | signum | design, designate, insignia, signal, signature, significant |
| sil- | quiet or still | Latin | silere | silence |
| silv-, sylv- | forest | Latin | silva, sylva | silviculture, sylvan, sylvatic |
| simi- | ape, monkey | Latin | simia | simian |
| simil-, simul- | likeness, imitating | Latin | simulare "to emulate", from similis "alike" | assimilate, dissimilate, dissemble, ensemble, resemble, semblance, similar, similarity, simile, similitude, simulacrum, simular, simulate, simulation, simulator, simultaneous, verisimilar, verisimilitude |
| sinap- | mustard | Greek | σίναπι (sínapi), (sināpízein), (sināpismós) | sinapine, sinapism |
| singul- | one each | Latin | singulus | singular |
| sinistr- | left | Latin | sinister, sinistri | sinistral |
| sin- | China, Chinese | Latin | Sina | sinology, Sinanthropus |
| sinu- | (to draw) a line | Latin | sinuare | insinuate |
| sinus- | hollow, bay | Latin | sinus | sinusoidal |
| siop- | silence | Greek | σιωπή (siōpḗ), σιωπᾶν (siōpân), σιωπητέος (siōpētéos), σιώπησις (siṓpēsis) | aposiopesis, aposiopetic |
| siph- | tube | Greek | σίφων (síphōn) | siphon, siphonoglyph |
| sist- | cause to stand | Latin | sistere | assist, consist, desist, exist, insist, persist, resist, solstice, subsist |
| sit- | food, grain, wheat | Greek | σῖτος, σίτου (sîtos, sítou) | ectoparasite, endoparasite, endoparasitoid, epiparasite, hyperparasitism, kleptoparasitism, mesoparasite, parasite, parasitic, parasitism, parasitoid, sitology, syssitia |
| siz- | hiss | Greek | σίζω, σίξις (síxis) | |
| smaragd- | emerald | Greek | σμάραγδος (smáragdos), σμαράγδινος (smarágdinos) | smaragdine |
| smil- | carving knife | Greek | σμίλη (smílē), σμιλεύω, σμιλευτός, σμίλευμα | smilodon |
| soci- | group | Latin | socius, sociare | associate, association, associative, consociate, consociation, consociational, disassociate, disassociation, dissociable, dissocial, dissociate, dissociation, dissociative, interassociation, nonassociative, sociability, sociable, social, sociality, societal, society |
| sol- | sun | Latin | sol, solis | circumsolar, extrasolar, insolate, insolation, solar, solarium, soliform, soliscence, solstice, subsolar |
| sol- | comfort, soothe | Latin | solari | consolation, console, solace |
| sol- | alone, only | Latin | solus | desolate, desolation, desolatory, saudade, sole, soliloquy, solitaire, solitary, solitude, solitudinarian, solitudinous, solivagous, solo, sullen |
| sole- | accustomed | Latin | solere "be accustomed" | insolence, insolent, obsolescence, obsolescent, obsolete |
| solen- | channel, pipe | Greek | σωλήν (sōlḗn) | solenocyte, solenodon, solenogaster, solenoid, Solenopsis |
| solv-, solut- | loosen, set free | Latin | solvere, solutus | absolute, absolve, dissolute, dissolve, resolute, resolve, soluble, solute, solution, solve, solvent |
| soma- | body | Greek | σῶμα, σώματος (sôma, sṓmatos) | allosome, asomatous, autosome, centrosome, chromosome, decasomy, disomic, disomy, episome, gonosome, heptasomy, heterochromosome, heterodisomic, heterodisomy, hexasomy, isodisomic, isodisomy, macrosomia, metasomatic, metasomatism, microsome, microsomia, monosome, monosomic, monosomy, pentasomic, pentasomy, plasmosome, polysomic, polysomy, pyrosome, somatic, somatomancy, somatoparaphrenia, somatopleure, somatotype, somite, tetrasomic, tetrasomy, trisomic, trisomy |
| somn- | sleep | Latin | somnus | insomnia, somnambulist, somnifacient, somniferous, somnific, somniloquy, somnolent |
| somni- | dream | Latin | somnium | somnial |
| son- | sound | Latin | sonus | absonant, ambisonic, assonance, assonant, assonate, consonance, consonant, consonous, dissonance, dissonant, inconsonance, inconsonant, infrasonic, infrasound, magnisonant, resonance, resonant, resonate, resound, sonance, sonant, sonata, sondage, sonnet, sonorant, sonority, sound, subsonic, supersonic, triconsonantal, ultrasonic, ultrasound |
| soph- | wise | Greek | σοφός (sophós), σοφία (sophía), σόφισμα (sóphisma), σοφισμός (sophismós) | antisophism, pansophism, pansophist, pansophy, philosophize, philosophy, sophism, sophist, sophistry, sophisticate, Sophocles, sophomania, sophomaniac, sophomore, sophomoric |
| sopor- | deep sleep | Latin | sopor | sopor, soporific |
| sorb-, sorpt- | suck | Latin | sorbere | absorb, absorbency, absorbent, absorption, absorptive, absorptivity, adsorb, adsorbent, adsorption, exsorption, insorption, malabsorption, resorb, resorption, resorptive, sorbent, sorbile, sorbition, sorption |
| sord- | dirt | Latin | sordere, sordes | sordes, sordid |
| soror- | sister | Latin | soror | cousin, sororal, sororate, sororicide, sorority |
| spa- | draw, pull | Greek | σπᾶν (spân), σπάσις (spásis), σπασμός (spasmós), σπάσμα (spásma), σπαστικός (spastikós), σπώμενον (spṓmenon), σπάδιξ (spádix), σπαδίζω | antispasmodic, palinspastic, perispomenon, properispomenon, spadix, spasm, spasmatic, spasmodic, spasmogenic, spasmolytic, spastic, spasticity |
| spad- | eunuch | Greek | σπάδος (spádos), σπάδων (spádōn), σπαδοειδής | epispadias, hypospadias |
| sparg-, -sperg-, spars-, -spers- | scatter, sprinkle | Latin | spargere | asperse, aspersion, aspersive, dispersal, disperse, dispersion, dispersive, insperse, inspersion, interspersal, intersperse, interspersion, nonaspersion, nondispersive, nonsparse, sparge, spargefaction, sparse, sparsity |
| spath- | blade | Greek | σπάθη (spáthē) | spade, spatha, spathe, spay |
| spati- | space | Latin | spatium | interspace, interspatial, space, spatial, spatiate, subspace |
| spec-, -spic-, spect- | look | Latin | perspicuus, specere, spectare, speculari | aspect, aspectual, auspicate, auspice, auspicious, biaspectual, bispecific, bispecificity, circumspect, circumspection, circumspective, conspecific, conspecificity, conspectus, conspicuous, despection, despicable, despiciency, despise, despite, disrespect, disrespectable, especial, expect, expectancy, expectant, expectation, inauspicious, incircumspect, inconspicuous, infraspecific, inspect, inspection, inspector, inspeximus, interspecies, interspecific, intraspecies, intraspecific, introspection, introspective, irrespective, multispecific, multispecificity, multispectral, nonspecific, perspective, perspicacious, perspicuity, perspicuous, prospect, prospective, prospector, prospectus, prospicience, prospicient, reinspect, respect, respectability, respectable, respectant, respective, respite, retrospection, retrospective, special, speciality, speciation, specie, species, specific, specification, specificity, specimen, speciosity, specious, spectacle, spectacular, spectacularity, spectant, spectation, spectator, spectatorial, spectral, spectre, spectrum, specular, speculate, speculation, speculative, speculator, speculatory, speculum, spice, spite, subspeciality, subspecies, suspect, suspicion, suspicious, transpicuous, trispecific, unispecific |
| speir-, spor- | sow | Greek | σπείρω (speírō), σπαρτός, σπορά, σποράς, σποράδος (sporás, sporádos), σποραδικός (sporadikós), σπόρος (spóros) | aplanospore, archesporium, carpospore, chlamydospore, diaspora, diaspore, endospore, esparto, eusporangium, exospore, heterosporous, heterospory, homosporous, isosporous, leptosporangium, megasporangium, megaspore, microsporangium, microspore, mitospore, sporadic, sporangiospore, sporangium, spore, sporocarp, sporophyte, teliospore, tetraspore, tetrasporophytic, zygospore |
| spele- | cavern | Greek | σπέος (spéos), σπήλαιον (spḗlaion) | speleogen, speleogenesis, speleology, Speleomantes, speleomorphology, speleoseismite, speleothem, speleotherapy |
| spelyng- | cave | Greek | σπῆλυγξ, (spêlynx, spēlyng-) | spelunk |
| spend-, spond- | pledge, promise | Greek | σπένδειν (spéndein), σπονδή, σπονδάς (spondḗ, spondás), σπονδεῖος, σπονδικός | spondaic, Sponde, spondee |
| sper- | hope | Latin | spes, sperare | despair, desperado, desperate, desperation, esperance, prosper, prosperity, prosperous |
| sperm- | seed | Greek | σπέρμα, σπέρματος (spérma, spérmatos) | angiosperm, endosperm, gymnosperm, perisperm, sperm, spermatid, spermatocyte, spermatogenesis, spermatogonium, spermatozoon, stenospermocarpy |
| sphal- (ΣΦΑΛ) | cause to fall | Greek | σφάλλειν (sphállein), σφαλερός (sphalerós), σφαλλόμενον | sphalerite, sphaleron |
| sphen- | wedge | Greek | σφήν, σφηνός (sphḗn, sphēnós) | sphenic, Sphenodon, sphenoid |
| spher- | ball | Greek | σφαῖρα (sphaîra) | aspheric, hemisphere, hypersphere, mesosphere, pseudosphere, sphere, spherics, spheroid, spherometer, spherulite, stratosphere, trimetasphere, troposphere |
| sphing-, sphinct- | strangle | Greek | σφίγγειν (sphíngein), Σφίγξ sphings, σφιγκτήρ | sphincter |
| sphondyl- | vertebra | Greek | σφόνδυλος, σφονδύλου (sphóndulos, sphondúlou) | spondylitis, spondylolisthesis, spondylolysis, spondylosis, Temnospondyli |
| sphrag- | seal | Greek | σφραγίς (sphragís), (sphragistikós), σφραγίζω | sphragistic |
| sphyg- | pulse | Greek | σφύζειν (sphúzein), σφυγμός (sphugmós), (sphugmikós), (sphúxis) | asphyxia, sphygmic, sphygmochronograph, sphygmograph, sphygmomanometer, sphygmus |
| spic- | spike | Latin | spica | spica, spicate, spicose, spicosity, spicular, spiculate, spicule, spiculiform |
| spin- | thorn | Latin | spina | infraspinate, infraspinatus, interspinal, spinal, spine, spinel, spinescent, spiniferous, spiniform, spinose, spinous |
| spir- | breathe | Latin | spirare | aspire, conspire, expire, inspire, perspire, respiration, spirit |
| splen- | spleen | Greek | σπλήν (splḗn), splēnikós | asplenia, hypersplenism, hyposplenia, polysplenia, splenectomy, splenic, splenitis, splenoid, splenomegaly |
| spond- | Greek | | |
| spond-, spons- | a surety, guarantee; give assurance, promise solemnly | Latin | spondere, sponsus | correspond, correspondence, correspondent, corresponsive, cosponsor, despond, despondency, despondent, desponsage, desponsate, desponsation, disespouse, espousage, espousal, espouse, interspousal, irresponsibility, irresponsible, irresponsive, nonresponsive, respond, respondee, respondence, respondent, response, responsibility, responsible, responsion, responsive, responsivity, riposte, sponsal, sponsion, sponsional, sponsor, spousal, spouse |
| spondyl- | vertebra | Greek | σπόνδυλος (spóndulos) | platyspondyly, spondylid, spondylolisthesis, spondylolysis, spondylopyosis, spondyloschisis, spondylosis, spondylosyndesis, Spondylus |
| spor- | Greek | | |
| spu-, sput- | spew, spit | Latin | spuere | exspuition, sputum |
| squal- | scaly, dirty, filthy | Latin | squalere | squalid, squalidity, squalor |
| squam- | scale | Latin | squama | squamous |
| squarros- | spreading at tips | Latin | squarrosus | squarrose |
| st- (ΣΤΑ) | cause to stand | Greek | ἵστημι histēmi, histánai, στατικός, στάσις, στατήρ, στήλη | acrostatic, actinostele, anastasis, antistatic, apostasy, apostate, astasia, astasis, astatic, astatine, catastasis, chronostasis, diastase, diastasis, diastatic, diasystem, ecstasy, ecstatic, epistasis, episteme, epistemic, epistemology, eustasis, eustatic, eustele, haplostele, homeostasis, homeostatic, hydrostatic, hypostasis, hypostasize, hypostatic, hypostatize, mesostatic, metastasis, metastasize, metastatic, metasystem, orthostates, orthostatic, protostele, stasimon, stasis, stater, static, statoblast, statocyst, statolith, stela, stele, systasis, system, systematic, systematize, systematology, systemic, teleutostatic |
| st- | stand | Latin | stare "to stand", also causative form statuere "to enact, set", from status "condition, position" | antestature, arrest, arrestant, arrestee, bistability, bistable, bistate, circumstance, circumstantial, consist, constable, constabulary, constancy, constant, constitute, consubstantiation, contrast, distance, distant, equidistance, equidistant, establish, estate, extant, inconstancy, inconstant, instability, instance, instant, obstacle, presto, stable, stamen, stamina, stance, stanchion, stanza, state, station, stationary, statistic, statue, status, staunch, stay, substance, substantial, substantiality, substantiate, substantiation, substantive, substate, substation, substitute, superstation, superstition, superstitious, transubstantiate, transubstantiation, tristate |
| stagn- | pool of standing water | Latin | stagnare | stagnant |
| stala- | dripping, trickling | Greek | σταλακτός (stalaktós) and σταλαγμός (stalagmós), both from σταλάζειν (stalázein) "to drip" | stalactite, stalagmite |
| stann- | tin | Latin | stannum | stannous |
| staphyl- | bunch of grapes | Greek | σταφυλή (staphulḗ) | staphyledema, staphylion, staphylococcus, staphyloderma, staphyloplasty |
| statu-, -stitu- | stand | Latin | statuere | institution, statute |
| steat- | fat, tallow | Greek | στέαρ, στέατος (stéar, stéatos) | stearic acid, steatolysis, steatolytic, steatosis |
| steg- | cover | Greek | στέγειν, στέγη (stégē), στεγανός (steganós) | steganography, steganopod, Stegosaurus |
| stell-, stol- | send | Greek | στέλλω (stéllō), στάλσις (stálsis), στολή (stolḗ) | apostle, centrostaltic, diastole, epistle, epistolic, epistolize, epistolography, eusystole, hypodiastole, peristalsis, peristaltic, peristole, stole, systaltic, systole |
| stell- | star | Latin | stella | constellate, constellation, stellar |
| sten- | stand | Greek | στεναί (stenaí) | apostasy, apostate |
| sten- | narrow | Greek | στενός (stenós) | stenography, stenosis |
| stere- | solid | Greek | στερεός (stereós) | allosteric, stereochemistry, stereochromy, stereographic, stereography, stereoisomer, stereometry, stereophonic, stereopsis, stereoscope, stereoscopy, stereotaxis, stereotomy, stereotype, stereotypic, steric |
| stern- | breastbone | Greek | στέρνον (stérnon) | metasternum, prosternum, sternum |
| stern-, strat- | spread, strew | Latin | sternere, stratus | consternation, prostrate, stratify, stratum, stratus, street |
| steth- | chest | Greek | στῆθος (stêthos) | stethoscope |
| sthen- | strength | Greek | σθένος (sthénos) | asthenia, asthenosphere, callisthenics, hyposthenia, sthène, sthenia |
| stich- | line, row | Greek | στείχειν (steíkhein), στίχος (stíkhos) | acrostic, cadastre, distich, distichous, haplostichous, hemistich, heptastich, monostich, monostichous, orthostichy, pentastich, polystichia, polystichous, stich, stichic, stichomancy, stichometry, stichomythia, telestich |
| stich- | tunic | Greek | στίχη (stíkhē), στιχάριον (stikhárion) | sticharion |
| stig- | mark, puncture | Greek | στίζειν (stízein), στίξις (stíxis), στίγμα, στίγματος (stígma, stígmatos) | anastigmat, anastigmatic, astigmatic, astigmatism, stigma, stigmata, stigmatic |
| still- | drip | Latin | stilla, stillare | distillation, instill |
| stimul- | goad, rouse, excite | Latin | stimulus | stimulate |
| stin- | stand | Latin | stinare | destination, obstinate |
| stingu-, stinct- | apart | Latin | stinguere | distinction, distinguish |
| stoch- | aim | Greek | στόχος (stókhos), στοχαστικός (stokhastikós), στόχασμα | stochastic |
| stom- | mouth | Greek | στόμα, στόματος (stóma, stómatos) | anastomosis, anastomotic, deuterostome, monostomous, ozostomia, pentastomid, protostome, stoma, stomach, stomatalgia, stomatic, stomatoplasty, -stome |
| stor- (ΣΤΟΡ) | spread, strew | Greek | στορέννυμι (storénnumi), στόρνυμι, στρῶμα (strôma) | biostrome, stroma |
| strat- | army | Greek | στρατός (stratós), στρατηγία (stratēgía) | stratagem, strategic, strategist, strategus, strategy, stratocracy, stratography, stratonic |
| streper- | noise | Latin | strepere | obstreperous |
| streph-, stroph-, strob-, stromb- | turn | Greek | στρέφειν (stréphein), στρεπτός (streptós), στροφή (strophḗ) | anastrophe, antistrophe, apostrophe, boustrophedon, catastrophe, catastrophic, catastrophism, epistrophe, monostrophe, monostrophic, strophe, strophic |
| strept- | twisted | Greek | στρέφειν, στρεπτός (streptós), στρεψίς (strepsís) | Strepsiptera, strepsirrhine, streptococcus |
| strig- | compress | Latin | strix, strigis | strigogyps |
| strigos- | having stiff bristles | Latin | strigosus from striga | strigose |
| string-, strict- | tight, upright, stiff | Latin | stringere, strictus | astringent, constrain, constrict, constringe, restrict, strain, strict, stringent |
| stroph- | turn | Greek | | |
| stru-, struct- | to make up, build | Latin | struere, structus | construct, construction, construe, destroy, destruct, instruct, obstruct, structure |
| stud- | dedication | Latin | studere | étude, student |
| stup- | wonder | Latin | stupere | stupid, stupor |
| styg- | Styx | Greek | Στύξ, Στυγός (Stúx, Stugós), Στύγιος | Stygian, stygiophobia |
| styl- | column, pillar | Greek | στῦλος (stûlos), στυλόω (stulóō) | amphiprostyle, amphistyly, anastylosis, araeostyle, araeosystyle, blastostyle, diastyle, epistyle, eustyle, hexastyle, hyostyly, hypostyle, monostylous, octastyle, orthostyle, peristyle, prostyle, pycnostyle, stylite, Stylites, stylobate, styloid, stylolite, stylus, systyle |
| su-, sut- | sew | Latin | suere, sutus | couture, suture |
| suad-, suas- | urge | Latin | suadere, suasus | persuasion |
| suav- | sweet | Latin | suavis | assuage, suave, suavity |
| sub-, su-, suf-, sug-, sup-, sus- | below | Latin | sub | submarine, submerge, suffix, suggest, support |
| subter- | under | Latin | subter | subterfuge |
| sucr- | sugar | Latin | succarum | sucrose |
| sud- | sweat | Latin | sudare | exudate, exude, sudarium, sudoriferous, transudate |
| sui- | self | Latin | sui | sui generis, suicide |
| sulc- | furrow | Latin | sulcus | sulcus |
| sum- | sum | Latin | summare "to sum up", from summa "sum" | consummate, consummation, sum, summa cum laude, summary, summation |
| sum-, sumpt- | take | Latin | sumere, sumptus | assume, assumption, consume, consumption, presumption, subsume |
| super- | above, over | Latin | super | insuperable, soprano, sovereign, summit, superable, superb, supercilious, supercomputer, superficial, superfluous, superimpose, superior, superlative, supermarket, supernal, supernatural, supernova, superposition, superpower, superscript, supersede, supersonic, superstition, supervene, supervise, supreme, supremum, surname, surplus, surround, survive |
| supin- | lying back | Latin | supinus | supination, supine |
| supra- | above, over | Latin | supra | supranationalism |
| surd- | deaf | Latin | surdus | absurdity |
| surg- | rise | Latin | surgere | insurgent, insurrection, resurgent, resurrection |
| sybar- | Sybaris | Greek | Σύβαρις, συβάρεως, Συβαρίτης Sybarī́tēs, Συβαριτικός | Sybarite, sybaritic, sybaritism |
| syc- | fig | Greek | συκῆ, σῦκον (sûkon) | sycomancy, sycophant |
| syn-, sy-, syg-, syl-, sym-, sys- | with | Greek | σύν (sún) | syllogism, symbol, symmetry, sympathy, synonym, synchronous, system |
| syring- | pipe | Greek | σύριγξ, σύριγγος (súrinx, súringos) | syringe, Syringodea, Syringoderma, Syringogaster, syringoma, syringomyelia, syrinx |