/ Dictionary / Index B bad actor: Meaning and Definition of Find definitions for: bad' ac'tor Pronunciation: [key] a mean, ill-tempered, troublemaking, or evil person. a vicious animal. an inveterate criminal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bad Badajoz Related Content Daily Word Quiz: dentifrice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language