/ Dictionary / Index B bêtise: Meaning and Definition of Find definitions for: bê•tise Pronunciation: (be-tēz'), [key] — n. lack of understanding, perception, or the like; stupidity. a stupid or foolish act or remark. something inconsequential or without merit; absurdity; trifle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: betise (Thesaurus) betimes Betjeman Related Content Daily Word Quiz: respite Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language