wacky (
http://definr.com/wacky)
adj 1: (informal terms) "gave me a cockamamie reason for not
going"; "wore a goofy hat"; "a silly idea"; "some
wacky plan for selling more books" [syn:
cockamamie,
cockamamy,
fool(a),
goofy,
sappy,
silly,
zany,
unreasonable]
2: informal or slang terms for mentally irregular [syn:
balmy,
barmy,
bats,
batty,
bonkers,
buggy,
cracked,
crackers,
daft,
dotty,
fruity,
haywire,
kooky,
kookie,
loco,
loony,
loopy,
nuts,
nutty]