Word origins

• invergeTo curve so as to extend into
• inversiveOf, pertaining to, characterised by, or causing inversion.
• investientServing to cover or clothe.
• investigableCapable of being investigated or studied.
• inveterationThe act of making inveterate.
• inviousuntrodden
• inviscateTo daub, catch, or entangle with glue or birdlime or other viscous matter.
• inviscerateDeep-seated; internal.
• invitatoryOf or pertaining to an invitation
• involucrinA protein component of human skin.
• invultuationA form of witchcraft: piercing a wax or clay image of a person in order to harm them.
• -iorSuffix occurring in comparative adjectives borrowed from Latin.
• ipsationSolitary masturbation.
• ipsativeDenoting a measure that forces a person to choose among multiple desirable options.
• ipsedixitismAn unfounded, false and dogmatic assertion; an ipse dixit.
• ipseityselfhood; individual identity
• ipsi-self
• ipsissima verbaThe actual words (spoken or transcribed).
• ipso genderOf an intersex person: identifying with the sex they were medically assigned; having a gender which matches their assigned sex.
• i.q.the same as
• ir-Used for expressing negation; not
• iracundAngry; irritable
• irascibilityThe quality of being irascible; irritability of temper.
• irenarchAn officer in Ancient Greece having functions corresponding to those of a Justice of the Peace.
• iridalPertaining to a rainbow.
• irrationableNot rational.
• irregibleNot regible; ungovernable, unmanageable, intractable.
• irreligiosityThe quality of being irreligious.
• irremunerableNot remunerable.
• irreprehensiblenot reprehensible, blameless, without blame; innocent
• irreptitioussurreptitious; spurious
• irresistibilityThe quality of being irresistible.
• irrespective ofRegardless of; without regard for; without considering.
• irriguousIrrigated, well-watered.
• irrisionThe act of laughing at another; derision.
• irruentrushing, moving quickly, especially inwards
• ischiocavernosusA muscle just below the surface of the perineum, used to flex the anus, stabilize the erect penis (in males), and tense the vagina (in females).
• ischiumThe lowest of the three bones that make up each side of the pelvis.
• ischuryThe inability to empty the bladder
• IseumA temple dedicated to the worship of the Egyptian goddess Isis.
• iteroparousreproducing more than once in a lifetime
• -itiousForms adjectives denoting "pertaining to, characterized by, having the nature of, resembling, tending to."
• jacchusThe marmoset (Hapale vulgaris)
• jacentLying stretched out.
• jactancyboasting; bragging
• jaculatoryDarting, shooting or throwing out suddenly
• jaculiferousprickly; bearing spines
• janicepsconjoined twins whose heads are fused together but look in opposite directions
• JapheticOf or pertaining to the supposed descendants of Japheth, one of the three sons of Noah in the Bible.
• JaponySynonym of Japan.
• jaspideousjaspidean; made of jasper
• jasponyxA form of onyx, part or all of whose layers consist of jasper.
• JeconiahAn ancient king of Judah, the son and successor of King Jehoiakim, who was dethroned by the King of Babylon in the 6th century BC and taken into captivity.
• jecoralOf or relating to the liver.
• jecorinAn azotized substance containing sulfur, found in the livers of young animals.
• Jell-OA brand of dessert made from gelatin.
• Jew's earA kind of edible fungus (Auricularia auricula-judae), growing on tree-trunks, formerly used for medicinal purposes.
• jocularyjocular; jocose; joking
• joculatorA jester; a joker.
• joculatoryfunny; witty
• JordanesA male given name of historical usage.
• Judeo-Judean, Judaic, Jewish
• judicableAble to be judged; capable of being tried or decided upon, especially in a legal case.
• judicatoryPertaining to judgement, or to passing a sentence.
• juglandinAn extract of green walnut shells, formerly used in medicine and as a dye.
• jugomaxillaryOf or pertaining to the zygomatic bone and the maxilla
• jugulationPrevention of a disease from progressing.
• juliformHaving the form of a catkin
• juncousFull of rushes; resembling rushes; juncaceous.
• juralOf or pertaining to law.
• jure uxorisBy right of wife.
• Juris DoctorA professional doctorate in law, and in some countries, a first professional graduate degree.
• jus officiiThe right of nationality or citizenship acquired by holding office in that place.
• jus soliThe right of nationality or citizenship acquired by being born in that place.
• juvenescentEspecially of one's mind or spirit, becoming juvenile or young.
• JuventasThe goddess of youth, and a daughter of Jupiter and Juno. Juventas was the cupbearer of the gods until she married her paternal halfbrother, Hercules, with whom she had twin sons, Alexiares and Anicetus. She is the Roman counterpart of Hebe.
• juxtaformA superclass of trypanosomatid parasites with laterally-attached flagellum.
• juxtapositTo juxtapose.
• jyngineOf or pertaining to the Jynx genus; pertaining to or characteristic of the wryneck.
• kilopondA gravitational metric unit of force equal to the magnitude of the force exerted by a mass of one kilogram in the standard gravity (i.e. at the surface of the earth).
• Knight TemplarA knightly member of the crusader age military order of Knights Templar.
• labdanumA sticky brown resin obtained from species of rockrose, used mainly in perfume.
• labefactionThe act of shaking or weakening or the resulting state; overthrow, ruination.
• labefyTo weaken.
• labializeTo round, make (a sound, notably a consonant) labial.
• laborantA chemist.
• labroseHaving thick lips (any sense).
• labruscaThe fox grape (Vitis labrusca).
• labyrinthicallabyrinthine; like or relating to a labyrinth
• lacertianPertaining to or resembling a lizard; lizard-like.
• lachrymablelamentable
• lachrymiformShaped like a teardrop
• laconismExtreme brevity in expression.
• lacriformShaped like a teardrop.
• lacrimogenouscausing the production of tears
• lactantlactating; producing milk.
• lactaryA dairyhouse.
• lactescentmilky
• lactificProducing or yielding milk.
• lactifugeA medicine to check the secretion of milk, or to dispel a supposed accumulation of milk in any part of the body