1. [Brit, slang] Insane, strange, eccentric or stupid
   "Her dotty aunt collected rubber bands";
   - balmy [archaic, slang], barmy [slang], bats [slang], batty [slang], bonkers [slang], buggy [N. Amer, slang], cracked [slang], crackers [slang], daft [Brit, slang], fruity [slang], haywire [slang], kooky [slang], kookie [slang], loco [slang], loony [slang], loopy [slang], nuts [slang], nutty [slang], round the bend [slang], around the bend [slang], wacky [slang], whacky [slang], daffy [slang], dippy [slang], doolally [Brit, slang], wacko [slang], daft as a brush [Brit, slang], potty [Brit, slang], round the twist [Brit, slang], dumbass [N. Amer, slang], nutsy [N. Amer, slang], barking mad [Brit, slang], mental [slang], barking [Brit, slang], bughouse [N. Amer, slang], cuckoo [slang]
    
2. [Brit, informal] Intensely enthusiastic about or preoccupied with
   "they are dotty about each other";
   - crazy [informal], wild [informal], gaga [informal]
    
3. Covered with dots
   "She wore a dotty dress with small polka dots all over"

Derived forms: dottiest, dottier

See also: enthusiastic, insane, keen

Encyclopedia: Dotty