BAD Full Form. Full Meaning of BAD Find long form and abbreviation, slang or definition of BAD. What does BAD mean? What does BAD stand for? We are providing world largest and most comprehensive acronyms, names, abbreviations database directory on the Internet. Our data base contains more than 8,00,000 terms abbreviations and acronyms. You can also search unique terms more than 4,00,000 general Comprehensive words.