- Evil; sinful.
- Disagreeable, unpleasant, or disturbing: a bad piece of news.
- Unfavorable: bad reviews for the play.
- Injurious in effect; detrimental: bad habits.
- Not working properly; defective: a bad telephone connection.
- Full of or exhibiting faults or errors: bad grammar.
- Being so far behind in repayment as to be considered a loss: bad loans.
- my bad Slang Used to acknowledge that one is at fault.
- half Informal Reasonably good.