What does BAD mean?

adjective

1. having undesirable or negative qualities“a bad report card”
2. very intense“a bad headache”
3. feeling physical discomfort or pain (`tough' is occasionally used colloquially for `bad')“my throat feels bad”
4. (of foodstuffs) not in an edible or usable condition“bad meat”
5. feeling or expressing regret or sorrow or a sense of loss over something done or undone“felt regretful over his vanished youth”
6. not capable of being collected“a bad (or uncollectible) debt”
7. below average in quality or performance“a bad chess player”
8. nonstandard“so-called bad grammar”