Definition of bad

• that which is below standard or expectations as of ethics or decency; "take the bad with the good"
• with great intensity (`bad is a nonstandard variant for `badly); "the injury hurt badly"; "the buildings were badly shaken"; "it hurts bad"; "we need water bad"
• very much; strongly; "I wanted it badly enough to work hard for it"; "the cables had sagged badly"; "they were badly in need of help"; "he wants a bicycle so bad he can taste it"