The letter “J” (pronounced “Jay”), the 10th letter of the Latin alphabet, has got an interesting history as a Johnny-come-lately “bookend” of sorts…”J” is the English alphabet’s “Hawaii”, the last to achieve letterhood. This 26th and final letter was introduced as a swash, a typographical embellishment for the already existing “I”. Phonetically, the vowel “I” and the consonant “J” used to sound the same and were interchangeable until a clear phonetic distinction between the two was made by an Italian grammarian (GG Trissino) in 1524. When Roman numerals were in their heyday “J” or “j” were used on the end of a sequence of numerals…so for “123”, instead of writing CXXIII, it be could rendered as CXXIIJ. Here’s a scattering of “J” words unlikely that you will find popping up in everyday intercourse.
Jabberwock: nonsense; gibberish [from “Jabberwocky”, dragon-like creature in Lewis Carroll’s Through the Looking Glass (1871)]
Jactancy: boastfulness; vainglorious boasting [L.jactare (“to throw”; “speak out”; “boast”)]
Janiform: having two faces looking in opposite directions [L. Janus “”Roman god”) + –fōrmis (“having the form of”)]
Janizary: (also Janissary) a follower or supporter; (hist.) member of Ottoman Turkish infantry, (14—(19th. [Turk.Yeni (“new”) + -çeri (“troops”)]
Jargonaut: one who uses excessive jargon [comb. Of “jargon” and Gk. -naut (“sailor”)]
. Jejunator: one who fasts [L. Jejunus (“fasting”) + -ator]
Jejune: dull; insipid; lacking in substance; superficial; naive; simplistic (of writing or ideas) dry and uninteresting [L. Jejunus (“fasting” – ie, being empty in a figurative sense)]
Jentacular: relating to breakfast; specifically to one taken early in the morning or immediately upon getting up [L. from ientō (“to have breakfast “) 🍳
Jeremiad: prolonged complaint; angry or cautioning harangue; lamentation; catalogue of woes [Fr. jérémiade, after Biblical prophet Jeremiah (Old Testament)]
Jesuitical: cunning; equivocating; quibbling [Fr. jsuitique (pertaining to the Jesuits)] (behaviours once attributed to the Jesuits)
Jovialist: a convivial person [L. ioviālis (“relating to the Roman god Jupiter”) + -ist]
Jumboism: admiration for bigness [(19th. circus elephant, Jumbo + -ism]
Jumentous: smelling strongly of horse urine or of some similar beast of burden [L. jumentum (“yoke-beast”)]
Jurisconsult: legal expert [L. jus (jur) (“law”) + consultus (“skilled”)]
Juvenescence: state of growing younger [L. juvenis (“young”) + -cence (?)]
Juvenilia: the works (literary, artistic, musical) of one’s youth (cf. Juvenal: a youth) [L. iuvenīlia (“of or pertaining to youth”)
Jackalope: North American version of a mythical wild beast. A fanciful cross between a jackrabbit and an antelope. Portmanteau word blending jacka with lope.