Antonyms of adj kooky
1 sense of kooky
Sense 1
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 -- (informal or slang terms for mentally irregular; "it used to drive my husband balmy")
INDIRECT (VIA insane) -> sane -- (mentally healthy; free from mental disorder; "appears to be completely sane")
Similarity of adj kooky
1 sense of kooky
Sense 1
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 -- (informal or slang terms for mentally irregular; "it used to drive my husband balmy")
=> insane (vs. sane) -- (afflicted with or characteristic of mental derangement; "was declared insane"; "insane laughter")