significative
That tends to signify or indicate; indicative
That has meaning or significance; significant

significatory
significant; meaningful; having signification

signitaries
plural of signitary

signitary
Alternative form of signatory.

signless
Without a sign or signs.

signlike
Resembling or characteristic of a sign.

signorial
Alternative form of seigneurial.

sigogglin
Not built correctly; crooked, skewed, or out of balance.

siker
Alternative spelling of sicker (“certain”).
Alternative spelling of sicker (“secure”).

silenaceous
Of or relating to the Silenaceae.

silenceable
Capable of being silenced.

silent
Free from sound or noise; absolutely still; perfectly quiet.
Not speaking; indisposed to talk; speechless; mute; taciturn; not loquacious; not talkative.
Keeping at rest; inactive; calm; undisturbed.
Not pronounced; having no sound; quiescent.
Having no effect; not operating; inefficient.
With the sound turned off; usually on silent or in silent mode.
Without audio capability.
Hidden, unseen.
Of an edit or change to a text, not explicitly acknowledged.
Not implying significant modifications which would affect a peptide sequence.
Undiagnosed or undetected because of an absence of symptoms.
Of distilled spirit: having no flavour or odour.

silenter
comparative form of silent: more silent

silentest
superlative form of silent: most silent

silentious
Habitually taciturn; prone to silence.

silentish
Somewhat silent.

silhouetted
simple past and past participle of silhouette

silicaceous
Synonym of siliceous.

silicated
Containing silicate or silica

silicatian
Containing silicate anions.

siliceous
Of, relating to, consisting of, or resembling silica or silicates.
Comprised of biogenic silicate minerals. Contrasted with the inorganic term siliciclastic.

silician
Containing silicon (especially when this replaces another element).

silicic
of, related to, or derived from silica

silicicalcareous
Consisting of silica and calcareous matter.

siliciclastic
Describing clastic rocks that bear quartz or similar silicate minerals

siliciclastics
plural of siliciclastic

silicicolous
That lives in a siliceous environment

siliciferous
yielding or bearing silica

silicious
Alternative spelling of siliceous.

silicoated
Having undergone the silicoating process.

silicoelastic
elastic and manufactured from silicone

silicofluoric
Containing, or composed of, silicon and fluorine.

silicomolybdic
Relating to silicomolybdic acid and its derivatives

siliconated
Reacted or treated with elemental silicon

siliconised
Alternative form of siliconized.

siliconlike
Resembling silicon.

silicophilous
That lives in an environment rich in silicate rocks

silicotic
Of, relating to, or affected with silicosis.

silicotuberculotic
Of or pertaining to silicotuberculosis.

silicotungstic
Relating to the silicotungstic acids

silicular
Relating to a silicle.

siliculose
Bearing silicles.
Relating to, or resembling, silicles.

siliquaceous
Having siliques.

siliquiferous
Bearing a silique.

siliquiform
Having the form of a silique.

siliquose
Bearing siliques.
Relating to, or resembling, siliques.

siliquous
siliquose

silkless
Lacking silk.

silled
Furnished with a sill.

sillimanitic
Relating to a sillimanite.

sillonated
Characterized by the presence of furrows, grooves, or ridges; having a surface marked by parallel lines or indentations.

sillycidal
Suicidal.

sillyish
Somewhat silly.

siloed
Pertaining to silos.

silolike
Resembling or characteristic of a silo.

silovarchy
Rule by silovarchs.

siltier
comparative form of silty: more silty

siltiest
superlative form of silty: most silty

siltlike
Resembling or characteristic of silt.

silty
Having a noticeable amount of silt.
Resembling or characteristic of silt.

silvan
Alternative spelling of sylvan.

silvatic
Alternative form of sylvatic.

silverbacked
Having a silver back.

silverless
Without silver or silvering.

silverplated
Alternative spelling of silver-plated.

silvestral
Of or pertaining to a forest or wood.

silvical
Relating to silvics.

silvicolous
Growing in woodlands.

silvicultural
Of, pertaining to, or obtained by silviculture

silvimetric
Relating to silvimetrics

silvipastoral
Relating to the upkeep of woodland and of livestock

silvopastoral
Of or pertaining to silvopasture.

silvopastoralist
Relating to silvopasture

silvopastural
Relating to silvopasture

silyated
Reacted or treated with silicon
Misspelling of silylated.

silylated
modified by silylation

simaroubaceous
Belonging to the family Simaroubaceae of tropical and subtropical trees.

simarubaceous
Belonging to the family Simaroubaceae of tropical and subtropical trees.

simatic
Composed predominantly of silica-bearing, magnesia-bearing, and ferriferous minerals such as olivine, pyroxene, amphibole, and biotite.

simheuristic
Relating to simheuristics

simian
Of or pertaining to apes and monkeys.
Bearing resemblance to an ape or monkey; apelike or monkeylike.

simianized
simple past and past participle of simianize

simians
plural of simian

simiesque
simian; apelike

similar
Having traits or characteristics in common; alike, allied, comparable.
Having the same shape, in particular, having corresponding angles equal and corresponding line segments proportional.
Of two square matrices; being such that a conjugation sends one matrix to the other.

similarish
Somewhat similar.

similars
plural of similar

similative
Implying or indicating likeness or resemblance.

similatives
plural of similative

similiar
Misspelling of similar.

similitive
Likening one thing to another.

simiophagic
That feeds on (the blood of) monkeys.

simoniac
One who carries on or is guilty of simony.

simoniacal
Synonym of simoniac.

simp
A simple person lacking common sense; a fool or simpleton.
Someone who is not worthy of respect.

simpable
Capable of being simped for.

simpatico
Having a compatible temperament or pleasing qualities.
Compatible (with a person, thing, etc).

simpery
Characterized by a simper; smirky.

simpier
comparative form of simpy: more simpy

simpiest
superlative form of simpy: most simpy

simpish
Characteristic of a simp; simpy, foolish.

simplectic
Misspelling of symplectic.

simplehearted
Alternative form of simple-hearted.

simpleminded
Alternative form of simple-minded.

simpless
simplicity or silliness

simpletonian
Relating to or characteristic of a simpleton.

simpletonish
Like a simpleton; dim-witted.

simplicial
Having to do with, or having, simplices.

simplifiable
Capable of being simplified.

simplificational
Relating to simplification.

simplificative
That leads to simplification

simplificatory
Serving to simplify.

simplish
Somewhat simple.

simplistic
Overly simple.
In a manner that simplifies a concept or issue so that its nuance and complexity are lost or important details are overlooked.

simpy
Characteristic of a simp; foolish

simulable
Capable of being simulated.

simulacral
Of or relating to a simulacrum.

simulant
Something that simulates something else such as a gemstone.

simulatable
That can be simulated

simulated
simple past and past participle of simulate

simulational
Of or pertaining to simulation

simulative
That simulates.

simulatives
plural of simulative

simulatory
simulated, or capable of being simulated
Acting as a simulation

simultaneitive
Of or pertaining to simultaneous actions.

simultaneous
Happening at the same moment.
To be solved for the same values of variables.

sinal
Pertaining to the sinuses.

sinalagmatic
Alternative form of synallagmatic.

sinapic
relating to sinapic acid or its derivatives

sinapinic
Of or pertaining to sinapinic acid or its derivatives

sinaptosomal
Misspelling of synaptosomal.

sinarchist
Alternative form of Sinarquist.

sinarchists
plural of sinarchist

sincerely
In a sincere or earnest manner; honestly.
A conventional formula for ending a letter, used when the salutation addresses the person for whom the letter is intended by his or her name.