1. [1900s; 1980s+] angry, frustrated; of an animal, vicious.
2. [1970s+] aggressive, offensive, bad.
3. [1980s+] (also illy) on the bad = good model, wonderful, first-rate.
4. [1990s+] unattractive.
[1980s+] (US teen) an all-purpose denunciation of an object or activity.
SE in slang uses
[late 17C–early 19C] ninepence (a coin).
see separate entry.
see under piece n.
[20C+] (Ulster) uncooperative.