/ Dictionary / Index J jejune: Meaning and Definition of Find definitions for: je•june Pronunciation: ( ji-jn'), [key] — adj. without interest or significance; dull; insipid: a jejune novel. juvenile; immature; childish: jejune behavior. lacking knowledge or experience; uninformed: jejune attempts to design a house. deficient or lacking in nutritive value: a jejune diet. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: jejune (Thesaurus) jejun- jejunectomy Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language