sibylline
Of or pertaining to or resembling a sibyl or female oracle, especially the Cumaean Sibyl and the Sibylline Books.
Of or pertaining to or resembling a sibyl or female oracle, especially the Cumaean Sibyl and the Sibylline Books.
Of or pertaining to or resembling a sibyl or female oracle, especially the Cumaean Sibyl and the Sibylline Books.
Excessively and exorbitantly expensive. (In allusion to the Sibyl who sold three books to Tarquinius Superbus at the price of the original nine.)

siccaneous
dry

siccar
Alternative spelling of sicker: certain
Alternative spelling of sicker: secure

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

sickass
Alternative form of sick-ass.

sickish
Somewhat sick, but not seriously so.

sicklaemic
Alternative form of sicklemic.

sicklelike
Resembling or characteristic of a sickle.

sicklemic
Of or relating to sicklemia.

sickular
Leftist; in Indian politics, supposedly secularist and partaking in tokenism, or opposed to Hindu nationalism.

sickulars
plural of sickular

sicky
Alternative form of sickie (“sick day”).

sicular
Relating to a sicula.

sidal
Of or involving a person's side (rather than the front or back).

siddity
Alternative form of saditty.

sideal
Alternative form of sidal.

sideblown
Of an instrument, that is blown on the side, rather than at the end.

sideboarded
simple past and past participle of sideboard

sideburned
Having sideburns.

sidehall
Having a corridor along one side of a building, rather than the centre.

sideless
Lacking a side; open at the sides.

sideling
directed toward one side
inclined; having an inclination

sidelings
plural of sideling

sidelong
Directed to the side; sideways.
Slanting or sloping; oblique.
Indirect; suggestive; not straightforward.
Along the side of something.

sidely
Of or relating to the side (of something); lateral.

sidemounted
Mounted as a sidemount.

sideral
Dated form of sidereal.

sidereal
Of or relating to the stars.
Relating to a measurement of time relative to the position of the stars.
Relating to a measurement of time relative to the point of the vernal equinox.

sideritic
Containing or relating to siderite.

sideroads
plural of sideroad

sideroblastic
Relating to sideroblasts.

siderocapsaceous
Of or relating to the Siderocapsaceae.

siderographic
Of or relating to siderography; executed by engraved plates of steel.

siderolithic
Characterized by iron minerals in grains or pisoliths.

sideropenic
relating to sideropenia

siderophil
Alternative form of siderophile.

siderophile
In the Goldschmidt classification, an element that forms alloys easily with iron and is concentrated in the Earth's core.
A cell or tissue that has an affinity for iron.
An element that has a strong chemical affinity for metallic iron.

siderophiles
plural of siderophile

siderophilic
Being or relating to a siderophile.

siderophils
plural of siderophil

siderophoric
Relating to siderophores

siderostatic
Of or relating to the siderostat.

siderotic
Relating to siderosis.

siderous
Composed of iron.

siderurgic
Relating to siderurgy.

siderurgical
Alternative form of siderurgic.

sidescan
That scans sideways rather than straight down

sidescrolling
That scrolls horizontally.

sidesplitting
Exceptionally funny; hilarious.
Of laughter, intensely uncontrollable and genuine.

sideswept
Swept to the side.

sideview
As viewed from the side

sideward
Toward a side.

sidewards
Toward a side.

sideway
A footpath near a road.
A byway.

sideways
plural of sideway

sidewhiskered
Alternative form of side-whiskered.

sidinged
Having a specified kind of siding.

siditty
Alternative form of saditty.

siegeless
Without a siege.

siegelike
Resembling or characteristic of a siege.

sienitic
Alternative form of syenitic.

sievable
Suitable for sieving.

sieveable
Alternative form of sievable.

sieveless
Without a sieve.

sievelike
Resembling a sieve; thus, having holes through which fluids can pass

sievish
Like a sieve: unretentive.

sif
Foul, disgusting.

siftable
Capable of being sifted.

siftproof
Designed so that loose powder etc. cannot sift out during transit.

sighful
Full of sighs.

sighless
Without sighs.

sighlike
Resembling or characteristic of a sigh.

sightable
Capable of being sighted; visible from a vantage point

sightless
Without sight; blind; unseeing.
Synonym of invisible.

sightproof
invisible; not able to be seen

sightreadable
Capable of being sightread.

sightworthy
Worth seeing, or visiting in order to see.

sigilic
Alternative form of sigillic.

sigillarian
A member of the Sigillaria, a genus of extinct trees.

sigillary
Relating to a seal or sigil.

sigillate
Decorated with impressed patterns.
Marked with seal-like scars.

sigillated
Decorated by means of stamps (imprints).

sigilless
Without sigils.

sigillic
Relating to occult or magical sigils.

sigillographic
Of or pertaining to sigillography.

sigillographical
Alternative form of sigillographic.

siglarian
Relating to a siglum.

sigless
Without a sig (electronic signature appended to one's messages).

sigmalike
Characteristic of a structure composed of sigma bonds.

sigmate
Shaped like the Greek letter sigma.

sigmatic
Having the consonant s added to the root in order to form a tense or case stem.
Relating to sigmatics.

sigmatism
A lisp.
A defective pronunciation of sibilant sounds.

sigmatisms
plural of sigmatism

sigmatoid
Synonym of sigmoid.

sigmatropic
Describing any rearrangement reaction in which single bonds are broken and others are formed

sigmatropy
sigmatropic reaction

sigmoidal
sigmoid; S-shaped.
Characterized by a sigmoid curve or function

sigmoidals
plural of sigmoidal

sigmoidoscopic
Relating to the type of examination of the colon.

sigmurethrous
Of or pertaining to the informal taxonomic group Sigmurethra of molluscs.

signable
That can be signed (represented in sign language).
Ready to have a signature affixed to it, as with a contract.
Available for the posting of signs.
Capable of being signed, or recruited by a sports club.

signal
A sequence of states representing an encoded message in a communication channel.
Any variation of a quantity or change in an entity over time that conveys information upon detection.
A sign made to give notice of some occurrence, command, or danger, or to indicate the start of a concerted action.
An on-off light, semaphore, or other device used to give an indication to another person.
An on-off light, semaphore, or other device used to give an indication to another person.
An electromagnetic action, normally a voltage that is a function of time, that conveys the information of the radio or TV program or of communication with another party.
An action, change or process done to convey information and thus reduce uncertainty.
A token; an indication; a foreshadowing; a sign.
Useful information, as opposed to noise.
A simple interprocess communication used to notify a process or thread of an occurrence.
A signalling interaction between cells

signaletic
Related to or involving the Bertillon system of anthropometry.
Pertaining to signs or signifiers.

signalic
Of, or related to signals.

signall
Obsolete form of signal.

signalless
Without any signals.

signalomic
Relating to signalomes

signataries
plural of signatary

signatary
Alternative form of signatory.

signate
Having definite colour markings; bearing spots resembling letters.
Designate.

signatory
One who signs or has signed something.

signatural
Of or relating to a signature.

signatureless
Without a signature.

signboarded
Marked with signboards.

signeted
Stamped or marked with a signet.

signetted
Alternative form of signeted.

signiconic
Characterized by intricate variations of typography, page layout, color, etc. that reflect spaces and events in the narrative.

signifiable
Capable of being signified.

signific
Representing meaning.
Relating to significs.