/ Dictionary / Index L least: Meaning and Definition of Find definitions for: least Pronunciation: (lēst), [key] — little less lesser —n. something that is least; the least amount, quantity, degree, etc. the youngest in a family or group. The repairs will cost at least $100. at the lowest estimate or figure:The repairs will cost at least $100. at any rate; in any case:You didn't get a good grade, but at least you passed the course.Also,at the least. not in the smallest degree; not at all: I am not in the least concerned about the outcome of the World Series. —adv. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: least (Thesaurus) leasing least bittern Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language