informal or slang terms for mentally irregular(adj.all)
Synonym:around the bend,
balmy,
barmy,
bats,
batty,
bonkers,
buggy,
cracked,
crackers,
daft,
dotty,
fruity,
haywire,
kooky,
loco,
loony,
loopy,
nuts,
nutty,
round the bend
source: wordnet30
