/ Dictionary / Index B bad blood: Meaning and Definition of Find definitions for: bad' blood' Pronunciation: [key] unfriendly or hostile relations; enmity; hostility; animosity: When the territory was being settled there was bad blood between the farmers and the ranchers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Badb bad breath Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language