KOOKY
balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, kooky, kookie, loco, loony, loopy, nuts, nutty, round the bend, around the bend, wacky, whacky
(adjective) informal or slang terms for mentally irregular; “it used to drive my husband balmy”
Source: WordNet® 3.1
Etymology
Adjective
kooky (comparative kookier, superlative kookiest)
(slang) Eccentric, strange, or foolish; crazy or insane; kookish.
(surfing) Behaving like a kook (a person with poor style or skill); kook-like.
Synonyms
• bonkers
• kookish
• nuts
• outlandish
• wacky
Antonyms
• conventional
• mainstream
• normal
• ordinary
• straight
• uneccentric
Anagrams
• Kokyo, Kyoko, koyok
Source: Wiktionary