/ Dictionary / Index B behaviour: Meaning and Definition of Find definitions for: be•hav•iour Pronunciation: (bi-hāv'yur), [key] — n. Chiefly Brit. behavior. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: behaviour (Thesaurus) behavior therapy behead Related Content Daily Word Quiz: bungled Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language