MarcusBennevall/EtymologyTaggerDataset huggingface dataset:
arras
From Middle English arras, from Middle French draps d'Arras, from the city of Arras, which was a major source for tapestries in the 15th century.
iamb
From French iambe in the mid-1800s, from Latin ïambus, from Ancient Greek ἴαμβος (íambos). Displaced iambus which shares the same classical origin.
trochee
Borrowed from French trochée, via Latin trochaeus from the Ancient Greek τροχαῖος (trokhaîos), derived from τρέχω (trékhō, “run”).
botulism
From German Botulismus, from Latin botulus (“sausage”), the first identified source of the disease, + -ism.
aficionado
Borrowed from Spanish aficionado (“fan, amateur”), past participle of aficionar (“to inspire fondness in someone, to get someone interested in something”). Doublet of affectionate.
ferocious
Taken from Latin ferōx (“wild, bold, savage, fierce”) + -ous.
matin
From Middle English matyn, from Latin mātūtīnus (“of the morning”).
From Middle French matin, from Latin mātūtīnum (“the morning”).
doit
Borrowed from Middle Low German doyt, cognate with Middle Dutch duit. Doublet of thwaite.
Borrowed from Scots doit, apparently a Scots cognate of dote.
ging
From Middle English gyng, gynge, genge, from Old English genge (“a troop, privy, company, retinue”), from Old Norse gengi, from Proto-Germanic *gangiją (“pace, walk”). Cognate with Middle Low German gink (“a going, turn, way”), Old Norse gengi (“accompaniment, entourage, help”), Icelandic gengi (“rate”). Related to Old English gengan (“to go”), from Proto-Germanic *gangijaną (“to go”). More at gang.
From a shortened Anglicized form of Irish Mac Fhionn, whence McGinn.
macher
From Yiddish מאַכער (makher, “influential person”, literally “one who makes”) from מאַכן (makhn, “to make”). Cognate, naturally, to English maker and German Macher.
crystallize
From crystal + -ize. The double l reflects the classical stem found in its etyma, Latin crystallus and Ancient Greek κρύσταλλος (krústallos), rather than the simplified spelling of the English base noun. Compare Hellenistic Greek κρυσταλλίζειν (krustallízein, “to shine like crystal”), post‐classical Latin crystallizare (“to change into crystal”), and French cristalliser.
North Sea
From Middle English North-see, from Old English norþsǣ (“northern sea, Bristol Channel, Baltic, North Sea”), equivalent to north + sea. Cognate with West Frisian Noardsee (“North Sea”), Dutch Noordzee, German Nordsee, Danish Nordsøen, Swedish Nordsjön, Icelandic Norðursjór.
metra
From Ancient Greek μήτρα (mḗtra, “womb”).
From Ancient Greek μέτρα (métra), plural of μέτρον (métron, “measure”).
adoption
Borrowed from French adoption, from Latin adoptio, allied to adoptare (“to adopt”). Equivalent to adopt + -ion.
mantlet
From Middle English mauntelet, from Old French mantelet, diminutive of mantel (“mantle”). Doublet of mantelletta.
barricade
The noun is borrowed from French barricade, or an assimilation of the earlier barricado to the French form. The verb is from the noun or French barricader.
hest
From Middle English heste, alteration of Middle English hes, from Old English hǣs (“command”). Akin to Old English hātan "to command". More at hight.
sted
From Middle English sted, from Old English stede (“place, spot, locality”).
Nazarene
In the sense "person from Nazareth", from Ancient Greek Ναζαρηνός (Nazarēnós, “of Nazareth”), an ethnonym of Ναζαρέθ (Nazaréth). In the sense "a member of a certain sect", from Ancient Greek Ναζωραῖος (Nazōraîos), which may or may not be related. For a list of theories as to the further etymology of this word, see the Wikipedia article on ‘Nazarene’.
Preston
From Old English prēost (“priest”) + tūn (“settlement”). Doublet of Prestatyn.
micturate
First attested in 1842; irregular back-formation from micturition on the basis of -ate (verb-forming suffix), from Latin micturiō (“to urinate”).
Related to Old English mīgan (whence Early Middle English miȝen (“to urinate”)
See also Mingere and meiere: urination.
dipper
From Middle English dippere; equivalent to dip + -er.
A translation of the Mandarin Chinese 斗宿 (Dǒuxiù).
ictus
Unadapted borrowing from Latin ictus (“a blow”), from īco (“to hit, strike”).
bring up
From Middle English bryngen up, dissimilated from Middle English upbryngen (“to bring up, raise”). Doublet of upbring.
arteria
Learned borrowing from Latin artēria (“a windpipe; an artery”), from Ancient Greek ᾰ̓ρτηρῐ́ᾱ (ărtērĭ́ā). Doublet of artery.
sunbeam
From Middle English sonnebeem, sonne beem, from Old English sunnbēam, sunnebēam (“sunbeam”), equivalent to sun + beam.
SSSR
Unadapted borrowing from Russian СССР (SSSR). From Russian Союз Советских Социалистических Республик (Sojuz Sovetskix Socialističeskix Respublik, “Union of Soviet Socialist Republics”)
Graces
From Latin Gratiae, from gratia (“grace”), from Ancient Greek χᾰ́ρῐς (khắrĭs, “grace, charity”).
fireworks
From fire + work(s). The similarity with Dutch vuurwerk and German Feuerwerk, both “fireworks”, is hardly coincidental. Since the word was apparently first attested in English circa 1575, probably from the Dutch (1540), from the German (sense early 16th c.), from Middle High German viurwerc (14th c. as “fuel, firewood”). A spread from the south northwards is also in line with the fact that the first European fireworks were produced in Italy in the late 14th century.
aerose
From Latin aerōsus (“full of copper”), from aes (“copper, brass”) + -ōsus.
patka
Borrowed from Punjabi ਪਟਕਾ (paṭkā) and/or Hindi पटका (paṭkā). Doublet of purdah.
Buda
From Hungarian Buda, probably borrowed from a Slavic personal name, though an alternative theory deriving the term from Proto-Slavic *voda (“water”) as a translation of Latin Aquincum, via aqua (“water”), is also popular. The folk etymology connecting the word to Bleda, the brother of Attila the Hun, is historically implausible.
Borrowed from Hungarian Buda
From Spanish viuda (“widow”).
auberge
Borrowed from French auberge. The term is attested in the fifteenth century as auberge, a loan from a term attested in eleventh century Old Occitan alberga (“camp, hut”), derived from albergar (“to host”). The term originated in Frankish *harjabergu, composed of the elements *harjaz (“army”) (compare German Heer) and *berganą (“to shelter, to protect”), whence German bergen. Doublet of albergo and harbor.
Kyoto
Borrowed from Japanese 京(きょう)都(と) (Kyōto, literally “capital city”), from Middle Chinese 京都 (kjæng-tu, “capital (of a country)”).
Honshu
From Japanese 本(ほん)州(しゅう) (Honshū, “main island”), from Middle Chinese 本 (pwón, “main”) + 州 (t͡ʃjuw, “province”).
chintzy
From chintz + -y, from Hindi छींट (chī̃ṭ).
From earlier chinchy, from Middle English chynchy (“miserly, stingy”), from Middle English chinche (“stingy, miserly; miser”) + -y.
rotund
Learned borrowing from Latin rotundus (“round”), from Latin rota (“wheel”), from Proto-Indo-European *Hreth₂- (“to run, to roll”). Doublet of round.
Rapunzel
Borrowed from German Rapunzel, the name of several varieties of lettuce.
Borrowed from German Rapunzel.
nymphette
From French nymphette. By surface analysis, nymph + -ette.
Borneo
Probably from Sanskrit वरुणद्वीप (varuṇa-dvīpa, “island of Varuna”), therefore a doublet of Brunei.
tisane
From Anglo-Norman tysanne, Middle French ptisane, tisane (“barley water, medicinal drink”), and their source, Latin tisana, variant of ptisana, from Ancient Greek πτισάνη (ptisánē, “peeled barley, barley gruel”), from πτίσσειν (ptíssein, “to peel, to crush”).
continuum
Borrowed from Latin continuum, neuter form of continuus, from contineō (“contain, enclose”).
viticulture
Etymology tree
Proto-Indo-European *weh₁y-
Proto-Indo-European *-tis
Proto-Indo-European *wéh₁itis
Proto-Italic *wītis
Latin vītisder.
English viti-
Proto-Indo-European *kʷelh₁-
Proto-Indo-European *kʷélh₁-e-ti
Proto-Italic *kʷelō
Latin colō
Proto-Indo-European *-tew-?
Proto-Indo-European *-r-eh₂?
Latin -tūra
Latin cultūrader.
Middle French cultureder.
English culture
English viticulture
From viti- + culture, from Latin vītis + cultūra (“cultivation of the vine, vine-growing”). Compare agriculture.
farrier
Borrowed from Middle French ferrier, from Old French ferrier, from Latin ferrārius, from ferrum (“iron”).
gallop
From Middle English galopen (“to gallop”), from Old French galoper (compare modern French galoper), from Frankish *wala hlaupan (“to run well”), from *wala (“well”) + *hlaupan (“to run”), from Proto-Germanic *hlaupaną (“to run, leap, spring”), from Proto-Indo-European *klaup-, *klaub- (“to spring, stumble”). Possibly also derived from a deverbal of Frankish *walhlaup (“battle run”) from *wal (“battlefield”) from a Proto-Germanic word meaning "dead, victim, slain" from Proto-Indo-European *wel- (“death in battle, killed in battle”) + *hlaup (“course, track”) from *hlaupan (“to run”).
More at well, leap, valkyrie. See also the doublet wallop, coming from the same source through an Old Northern French variant.
gymkhana
From Hindustani گیند خانہ (gendxānā) / गेंदख़ाना (gendxānā, “racquet court”), from گیند / गेंद (gend, “ball”) + خانہ / ख़ाना (xānā, “court”). Influenced by gymnastics and gymnasium.
chasse
Borrowed from French chassé.
From Middle English chasse, variant of case, from Old French chasse. Doublet of case, cash, and chase.
deform
PIE word
 *de
From Middle English deforme (“out of shape, deformed”) [and other forms], from Middle French deforme (modern French difforme (“misshapen, deformed”)), or directly from its etymon Latin dēfōrmis (“departing physically from the correct shape, deformed, malformed, misshapen, ugly; (figuratively) departing morally from the correct quality, base, disgraceful, shameful, unbecoming”), from dē- (prefix meaning ‘away from; from’) + fōrma (“form, appearance, figure, shape; fine form, beauty; design, outline, plan; model, pattern; mould, stamp; (figuratively) kind, manner, sort”) (further etymology unknown; perhaps related to Ancient Greek μορφή (morphḗ, “form, shape; appearance; outline; kind, type”), probably from Pre-Greek, but there is no consensus) + -is (suffix forming adjectives of the third declension).
From Middle English deformen (“to disfigure, distort, or mar; (figuratively) to disfigure morally; to defame; to dishonour”) [and other forms], equivalent to de- + form, from Old French deformer [and other forms] (modern French déformer (“to contort, distort, twist out of shape; (figuratively) to pervert”)), or directly from its etymon Latin dēfōrmāre (whence Medieval Latin difformāre), the present active infinitive of dēfōrmō (“to fashion, form; to delineate, describe; to design; to deform, disfigure; to mar, spoil”), from dē- (prefix meaning ‘away from; from’) + fōrmō (“to fashion, form, shape; to format”) (from fōrma (noun); see further at etymology 1).
Cognates
* Catalan deformar (“to deform”)
* Italian deformare (“to deform; to distort, warp”)
* Occitan deformar
* Portuguese deformar (“to deform”)
* Spanish deformar, desformar (“to deform, disfigure”)
Griko
From the Greko dialect Greek Γκρίκο (Gkríko) and Γρῆκος (Grîkos).
Salento
From Italian Salento, from Salentino dialect Salentu, of uncertain origin, possibly from Latin salum (“(surrounded by) sea”).
prophetic
Borrowed from Middle French prophétique, from Latin prophēticus, from Ancient Greek προφητικός (prophētikós), equivalent to prophet + -ic.
glowworm
From Middle English glouworm; equivalent to glow + worm. Compare cognate German Glühwurm; compare also firefly, lightning bug, and lanternfly.
anapestic
From Latin anapaesticus. By surface analysis, anapest + -ic.
anapest
From Latin anapaestus, from Ancient Greek ἀνάπαιστος (anápaistos, “struck back, reversed [relative to dactyl]”), from ἀνά (aná, “back”) + παίω (paíō, “to strike”).
pilgrim
Inherited from Middle English pilegrim, from Old English pilegrī̆m, from Old French pelegrin, from Latin peregrīnus (“foreigner”). Doublet of peregrine.
The change of /r…r/ to /l…r/ is an effect of dissimilation in early Romance; compare Italian pellegrino.
intervention
From Middle French intervention, from Latin interventiō. Morphologically intervene + -tion.
coincidence
From Middle French coincidence (French coïncidence). By surface analysis, coincide + -ence.
underfoot
From Middle English underfoote, underfote, equivalent to under- + foot. Cognate with Middle Dutch ondervoet (“underfoot”). Compare also Middle Low German undervôt (“pedestal, base”).
rotunda
Learned borrowing from Latin rotunda, from rotundus (“round”). In the architectural sense, from Sancta Maria Rotunda (the name for a church in the Pantheon).
improperly
From Middle English improprelich, impropreliche, impropurly, inproperlye; equivalent to improper + -ly or im- + properly.
insecurity
Borrowed from Medieval Latin īnsēcūritās. By surface analysis, insecure + -ity.
jumble
From Middle English jumbelen, alteration of jumbren, jombren, a variant of jumpren, frequentative of jumpen (“to jump”), equal to jump + -le. More at jumber, jump, jumper.
worldliness
From Middle English worldlynesse, equivalent to worldly + -ness. Compare West Frisian wrâldlikens (“worldliness”), German Weltlichkeit (“worldliness”), Swedish världslighet (“worldliness”).
pharaonic
From Latin Pharaōn- (stem of Pharaō (“Pharaoh”)) + -ic, originally modelled on German pharaonisch.
recompose
From re + compose; semantically partly borrowed from Latin recompōnō.
changeable
From Middle English chaungeable, from Old Northern French chaungeable, from Late Latin cambiāre (“to change”), equivalent to change + -able.
roseate
From Middle English roseat, from Anglo-Latin roseātus, equivalent to rose + -ate (adjective-forming suffix).
unremitting
un- + remitting, from remit (in now rare sense of “diminish, abate”),
from Middle English remitten, from Latin remittere (“to send, send back”). Compare Old French remettre, remetre, remitter. Not from nonexistent unremit. First attested in 1728.
unwitting
From Middle English unwittinge, unwitand, from Old English unwitende (“unwitting; not knowing; unaware; unconscious”), from Proto-Germanic *unwitandz (“not knowing”), equivalent to un- + witting. Cognate with West Frisian ûnwittend, Dutch onwetend, German Low German unwetend, German unwissend and unwissentlich, Icelandic óvitandi.
triduum
Borrowed from Latin trīduum, from trēs (“three”) + diēs (“day”).
Joel
From Hebrew יוֹאֵל (yo'él, “Yahweh (is) God”). As a medieval French and English given name, it is also from Breton Judicaël (related to Joyce and Jocelyn). Cf. Elijah.
magnify
From Middle English magnifien, from Middle French magnifier, from Latin magnificāre, from magnificus.
heartstrings
PIE word
 *ḱḗr
From Late Middle English hartestrynges, hert strynges, from Middle English herte (“heart”) + strenges, strynges (“cords, strings”). The English word is analysable as heart + strings.
whistling
Inherited from Middle English whistlynge, equivalent to whistle + -ing.
From Middle English whistlinge, whystlynge, from Old English hwistlung, equivalent to whistle + -ing.
leprosarium
Borrowed from Medieval Latin leprōsārium, from leprōsus (“leprous”) + -ārium (“-ary: building related to”). Doublet of leprosery.
leprology
From New Latin leprologia, from Medieval Latin leprōsia (“leprosy”) + -logia (“-logy”), from leprōsus (“leprous”) + -ia, from lepra (“leprosy”) + -ōsus (“-ose”), q.v. Equivalent to leprosy + -ology.
replication
Inherited from Middle English replicacioun, replicacion, from Anglo-Norman replicacioun and Old French replicacion (“reply, answer”), from Latin replicātiō, replicātiōnem. By surface analysis, replicate + -(at)ion.
paddock
The noun is almost certainly a variant of dialectal British parrock (“enclosure; park; croft, small field, paddock”), from Middle English parrok, parrock (“enclosed pasture, paddock; coop; feeding stall; cabin, hut”) [and other forms], from Old English pearroc, pearruc (“fence used to enclose a space; area enclosed by such a fence, enclosure”), from Proto-West Germanic *parruk (“enclosure; pen for animals”), from Proto-Germanic *parrukaz (“fence; enclosure”); further etymology uncertain, perhaps related to Proto-Germanic *barō (“bar, beam; barrier”), possibly from Proto-Indo-European *bʰerH- (“to pierce; to strike”). Equivalent to park + -ock. Doublet of park.
The verb is derived from the noun.
Cognates
* Danish park (“pond”)
* Dutch perk (“flowerbed; garden; pen”)
* German Pferch (“sheepfold, sheep-pen”)
From Middle English paddok, paddoke (“frog; toad”) [and other forms], from pad, pade (“frog; toad”) + -ok (diminutive suffix). Pad, pade is derived from Old English *pada, *padda, padde, from Proto-West Germanic *paddā, from Proto-Germanic *paddǭ (“toad”); further etymology uncertain, possibly ultimately from Proto-Indo-European *bʰew- (“to swell”). The English word is analysable as pad (“(Britain, dialectal) frog; toad”) + -ock (suffix forming nouns, originally with diminutive senses).
Sense 2 (“sledge”) is probably from the supposed resemblance of the object to a frog or toad.
clime
Borrowed from Latin clima, from Ancient Greek κλίμα (klíma, “(zone of) latitude”, literally “inclination”), from κλίνω (klínō, “to slope, incline”). See also climate.
Bellingham
Two origins:
* The suburb of London is named with the Old English personal name Bera, a byname from bera (“bear”), + -ing (“belonging to”) + hām (“homestead”).
* The village in Northumberland is named with Old English belle (“bell”), in reference to a bell-shaped hill, + -ing (“belonging to”) + hām (“homestead”)
Shawnee
Ultimately from Shawnee Shawanwa (“Shawnee”) or shawanoki (“southerners”), a hypothetical intermediary term is sometimes supposed to have facilitated the entry into English, such as Munsee sawanow.
verdigris
From Middle English vertegrece, verdegres, from Old French verte grez (literally “acidic green”), an alteration of older verte de Grece (literally “green of Greece”). The modern French writing of this word is vert-de-gris (literally “green of gray”).
viand
From Middle English vyaund, from Anglo-Norman and Old French viande, from Late Latin *vivanda, from Latin vīvenda, from the verb vīvō (“to live”). Compare victual.
The Philippines usage is an anglicization of Spanish vianda (which is ultimately from Latin via French), which is used to translate ulam in Tagalog. See also usage notes.
veritas
From Latin vēritās.
Borrowed from Latin vēritās (“truth; verity”).
Jesu
From Middle English Jesu, from the vocative (and genitive, etc) form Jēsū of Latin Jēsūs, and also reflective of the vocative (and genitive, etc) form Ἰησοῦ (Iēsoû) of Ancient Greek Ἰησοῦς (Iēsoûs). Gradually displaced as the normal form by Jesus in the Middle English and Early Modern English period, but retained or restored especially in a few religious texts on the model of Latin and Greek.
saturation
Etymology tree
Late Latin saturatiobor.
English saturation
Borrowed from Late Latin saturatio, saturationem.
scavenger
Originally from Middle English scavager, from Anglo-Norman scawageour (“one who had to do with scavage, inspector, tax collector”), from Old Northern French *scawage, escauwage (“scavage”), Old French *scavage, escavage, alteration of escauvinghe (compare Medieval Latin scewinga, sceawinga), from Old Dutch scauwōn (“to inspect, to examinate, to look at”). Usually reinterpreted/re-analysed today as scavenge (which was originally a backformation from this word) + -er. Compare Old English sċēawung (“a showing, spectacle, examination, inspection, toll on exposure of goods”) and Dutch schouwing (“inspection”). More at show.
scud
From Middle English scud (“incrustation, scurf, scab, peel, shedding”), perhaps from Old Norse skjóta (“to shoot, push, throw off, shed”) (see also scoot).
seaboard
From earlier sea-bord, perhaps continuing (with change in meaning) Middle English see bord (“porthole cover, seaward side”), equivalent to sea + board.
aecidium
From New Latin aecidium, the diminutive form of Ancient Greek αἰκίᾱ (aikíā, “injury”).
However Merriam-Webster takes the origin from Ancient Greek οἰκίδιον (oikídion) and refers to the botanist John Hill, in his A General Natural History, or New and Accurate Descriptions of the Animals, Vegetables, and Minerals, of the Different Parts of the World, vol. II, A History of Plants (London: Printed for Thomas Osborne, 1751), p. 64: "We have called this genus, distinguished by its peculiar cells, Æcidium, from the Greek οικιδιον, cellula." Compare also many other fungal spore-related terms in -idium, most coined after this one.
rachitis
Unadapted borrowing from New Latin rachitis, used by the British physician Francis Glisson (1597–1677) to refer to rickets, from Koine Greek ῥαχῖτις (rhakhîtis) (in ῥαχῖτις νόσος (rhakhîtis nósos, “spinal inflammation”, literally “spinal disease”)), the feminine form of ῥαχίτης (rhakhítēs, “in or of the spine, spinal”), from Ancient Greek ῥάχῐς (rhákhĭs, “lower part of the back; (anatomy) backbone, spine”) (probably ultimately Pre-Greek) + -ῖτις (-îtis) (feminine form of -ῑ́της (-ī́tēs, suffix forming nouns with the sense ‘one connected to’)). By surface analysis, rach- + -itis.
phenomenology
Etymology tree
Proto-Indo-European *bʰeh₂-der.
Proto-Hellenic *pʰáňňō
Ancient Greek φαίνω (phaínō)
Ancient Greek φαινόμενον (phainómenon)bor.
Late Latin phaenomenonder.
English phenomenon
Proto-Indo-European *leǵ-
Ancient Greek λόγος (lógos)
Proto-Indo-European *-h₂
Proto-Indo-European *-éh₂
Proto-Indo-European *-i-eh₂
Proto-Hellenic *-íā
Ancient Greek -ῐ́ᾱ (-ĭ́ā)
Ancient Greek -λογῐ́ᾱ (-logĭ́ā)bor.
Latin -logialbor.
French -logiebor.
English -logy
English phenomenology
From phenomenon + -logy, from Ancient Greek φαινόμενον (phainómenon, “thing appearing to view”), hence "the study of what shows itself (to consciousness)". According to Martin Heidegger's Introduction to Phenomenological Research, "the expression “phenomenology” first appears in the eighteenth century in Christian Wolff’s School, in Lambert’s Neues Organon, in connection with analogous developments popular at the time, like dianoiology and alethiology, and means a theory of illusion, a doctrine for avoiding illusion." (p.3)
Christmas Day
From Middle English Cristemasse day, from Old English Cristes mæssedæġ (“Christmas Day”, literally “day of Christ's mass”). Now equivalent to Christmas + day.
malignancy
From malignant + -cy or malign + -ancy or Latin malignantia.
opalescent
From opal + -escent, after opalescence or French opalescent. First attested in 1814.
conventicle
From Late Middle English conventicle, conventicule (“a gathering, meeting (especially a secret or unlawful one); (derogatory) a church”), from Latin conventiculum (“assembly; meeting (or the place involved); association”), from conventus (“assembled, convened”) + -culum (suffix forming noun diminutives), perfect passive participle of conveniō (“to assemble, convene, meet together”), from con- (“together, with”) (ultimately from Proto-Indo-European *ḱóm (“along, at, next to, with”)) + veniō (“to approach, come”) (ultimately from Proto-Indo-European *gʷem- (“to step”) + *-yéti (suffix forming intransitive, imperfective verbs)).
Conrad
A variant of German Konrad, ultimately from Proto-West Germanic *Kōnirād, from *kōnī (“bold, brave”) + *rād (“counsel”). Cognate of Old English Cēnrēd, Dutch Koenraad and Icelandic Konráð.
chigoe
Uncertain. Possibly from a Cariban language term such as Kari'na siko (“chigoe”) (early recorded variant chico), from Proto-Cariban *tikô, or else a West African borrowing such as Wolof or Yoruba jiga (“insect”). The eighteenth century historian Charlevoix refers to them as chique in his 1730 history of Hispaniola.
anschauung
Borrowed from German Anschauung, from anschauen (“to look at”).
welcoming
From Middle English welcomyng, equivalent to welcome + -ing.
From Middle English welcominge, welcomyng, equivalent to welcome + -ing.
thermos
Genericization of the trademark Thermos, from Ancient Greek θερμός (thermós, “warm”). Possibly related to English warm.
From Ancient Greek θέρμος (thérmos).