irriguous
Irrigated, well-watered.

irrisible
Not risible; unfunny or unable to make laugh

ischiadic
Obsolete form of ischiatic.

ischuretic
Relieving urinary retention

ischuretics
plural of ischuretic

isobarometric
Indicating equal barometric pressure.

isoconfertic
isopycnic

isocurve
An isoparametric curve

isodynamous
Of equal force or size.

isomyarian
A bivalve whose adductor muscles are equal in size.

isomyarians
plural of isomyarian.

isophorous
Able to transform into something else.

isopleuron
equilateral

isopodous
isopodan (belonging or relating to the isopods).

isopotential
equipotential

isopotentials
plural of isopotential

isorhythmic
Pertaining to or using isorhythm.
In ancient prosody, equal in the number of times for thesis and arsis, as a dactyl and anapest.

isorropic
Of equal value.

isospondylous
Of or pertaining to the former order Isospondyli.
Having the anterior vertebrae separate and normal.

isothermobathic
Of or pertaining to an isothermobath; having or indicating equal temperatures in a vertical section, usually in the ocean.

isotropous
isotropic

issant
Alternative form of issuant.

issuant
Issuing, emerging.
Issuing or emerging from something, especially from the bottom (or a division) of the field or chief, or from an ordinary.
Having only the upper half depicted, especially if because it is issuing from something (such as a division of the field). (Compare naissant.)

itchier
comparative form of itchy: more itchy

itchiest
superlative form of itchy: most itchy

itchy
Characterized by itching. (of a condition)
Feeling an itching sensation; feeling a need to be scratched. (of a person, animal or body part)
Causing an itching sensation.
In a state of agitation; easily alarmed.
Having a constant, teasing desire (for something, to do something); impatiently eager.
Causing a constant, teasing desire for something.
Feeling or showing a high level of sexual interest.

ithand
Industrious; assiduous; continually busy; diligent.
Plodding; constant; continual.
Conscientious; considerate; watchful; careful; attentive.
Continuous; persistent.

ithyphallic
Of or pertaining to the erect phallus that was carried in bacchic processions.
Of or pertaining to the erect phallus that was carried in bacchic processions.
Of or pertaining to an upward pointing, erect penis; (specifically) of an artistic depiction of a deity or other figure: possessing an erect penis.
Lascivious, obscene.
Pertaining to a metrical combination of two trochees followed by one spondee.

ithyphallics
plural of ithyphallic

ivery
Obsolete spelling of every.

ivorine
Made of ivory.
Resembling ivory; white, smooth.

ivorines
plural of ivorine

ivyed
Alternative spelling of ivied.

jacent
Lying stretched out.

jacinthine
hyacinthine

jackstraw
One of the pieces used for the game called jackstraws or pick-up sticks.
An insignificant person.

jacobin
Alternative letter-case form of Jacobin.
A domestic pigeon (Columba livia domestica) with reversed feathers on its neck.
Any hummingbird of the genus Florisuga.
A kind of thick French soup with cheese.

jaculatory
Darting, shooting or throwing out suddenly
suddenly thrown out
exclamatory; uttered in short sentences
ejaculatory.

jady
Resembling or characteristic of a jade (a horse too old to be put to work).

janglesome
quarrelsome

janty
Archaic form of jaunty.

japeworthy
Worthy of being japed, mockable.

jasperite
jasper (the gem)

jatrophic
Of or pertaining to physic nuts, the seeds of plants of the genus Jatropha.

jauntee
Obsolete form of jaunty.

jawfallen
Dejected, dispirited.
Having a "fallen" or locked jaw (and hence sometimes unable to speak), variously attributed to dejection (the previous sense) or lockjaw.

jawy
Relating to the jaws.

jealouse
Obsolete form of jealous.

jemmier
comparative form of jemmy: more jemmy

jemmiest
superlative form of jemmy: most jemmy

jentacular
Of or pertaining to breakfast; specifically, one taken early in the morning or immediately upon getting up.

jigajig
sexual intercourse

jigjig
Alternative form of jigajig.

jiltish
Like a jilt; capricious and unfeeling in matters of love.

jitney
Synonym of nickel, a 5-cent coin or amount.
Synonym of minibus, especially one with a scheduled fixed route.
Synonym of gypsy cab, an unlicensed taxi.
Synonym of shared taxi, a taxi usually shared with strangers to maximize profitability per trip.
An informal lawn bowling, curling, or darts competition in which all players present are randomly drawn into teams.
A fraudulent arrangement whereby a broker who has direct access to an exchange executes trades on behalf of a broker who does not.

joculary
jocular; jocose; joking

joculatory
funny; witty

jolterheaded
foolish; stupid

jonnock
Honest.

jucund
Pleasant, agreeable.

judiciall
Obsolete spelling of judicial.

jugal
Relating to a yoke or marriage.
Pertaining to the jugal bone.

jugals
plural of jugal

jugulary
Obsolete form of jugular.

jumpathons
plural of jumpathon

jymold
interlocked

kalisaccharic
Synonym of glucic.

kalmuck
A kind of shaggy cloth resembling bearskin.

kam
Crooked, awry.

karyotheca
Synonym of nuclear membrane.

karyothecas
plural of karyotheca

keld
Having a kell or covering; webbed.

kelds
plural of keld

kemp
A coarse or bristly hair, whisker; (in the plural) knotty hairs that will not felt.
Rough hair, wool, or fur.

kenspeck
Easily known or seen; obvious; apparent.

kenspecked
Marked and easily recognized; kenspeck.

keramographic
Suitable to be written or capable of being written upon

kerchered
Covered, or bound round, with a kercher.

kernish
clownish; boorish

ketole
indole

ketoles
plural of ketole

kiddyish
frolicsome; sportive

killcrop
A changeling.

kimbo
Archaic form of akimbo (“with hands on hips and elbows outward”).

kimboed
akimbo

kinde
Obsolete spelling of kind.

kindes
plural of kinde

kindful
Natural.
Of, relating to, or denoting a specified kind or sort; kindly.
Of natural disposition or affections; kind.

kindiful
Alternative form of kindful.

kindless
Unnatural; lacking expected feeling or ability.
Heartless; destitute of kindness.
Having no specific kind, unspecified, general.

kindlier
comparative form of kindly: more kindly

kindliest
superlative form of kindly: most kindly

kindly
Having a kind personality; kind, warmhearted, sympathetic.
Favourable, gentle, pleasant, tidy, auspicious, beneficent.
Lawful.
Natural; inherent to the kind or race.

kindsome
Marked by, or indicating kindness; gentle; kind.

kinesodic
Conveying motion; applied especially to the spinal cord, because it is capable of conveying both voluntary and reflex motor impulses while not being responsive to them.

kingdomed
Having a specified type or number of kingdoms.
Having a kingdom or the dignity of a king.

kinkly
Liable to kink or curl; kinky.

kirsome
Christian; christened.

kithless
Not knowing anyone; having no acquaintances or family.

kmer
A motif of length "k"

kmers
plural of kmer

knackish
Trickish; artful.

knagged
Having protuberances, knobs or knots

knappish
Peevish; snappish.

knappy
Having knaps; full of protuberances or humps; knobby

knarry
knotty; gnarled

knickered
Wearing knickerbockers.
Wearing knickers; pantied.

knightless
Unbecoming of a knight; unchivalrous.
Without a knight.

knowne
Obsolete spelling of known.

knurry
knotty

koap
Sexual intercourse.

koilanaglyphic
Obsolete form of coelanaglyphic.

kourotrophic
Relating to the goddess Kourotrophos.
Relating to the rearing of youths, especially in the context of Ancient Greece.

laborous
Obsolete form of laborious.

laborsome
American standard spelling of laboursome.

labourious
Obsolete form of laborious.

labourous
Obsolete form of laborious.

laboursome
Hard-working.
Characterised or marked by labour; laborious; difficult, elaborate, involved.

lacertiloid
Resembling or belonging to the Lacertilia.

lachrimable
Alternative form of lachrymable.

lachrymable
lamentable

lackadaisy
Lackadaisical.