Could you ,please tell me more synontm?

[RHOMA]

Hello Sir

Could you ,please tell me more synontm for crazy in slang language English ?
I knew mad but I heared " Daby or Teby " in song English .
Thanks

[Casiopea]

Could you have heard, "daffy"?

Here are some British English synonyms: barking, barmy, nutty, very silly, mad, dotty, potty, wango dingo, nut case, nutter, mental, bonkers, off your trolley, round the bend, round the twist, up the pole, scatty, meshuga, batty, loopy, crackers, loony, out me head, do lally tap, Lakes of Kilarney.

Source: http://www.peak.org/~jeremy/dictiona...xplanatory.php