adjective
deranged
Synonyms: absurd, batty, bedlamite, buggy, cockamamie, cracked, crazy, daffy, daft, demented, eccentric, enthusiastic, foolish, gung ho, harebrained, insane, irrational, keen, kooky, loony, lunatic, mad, nuts, potty, ridiculous, touched, unusual, wacky, warm, zealous
Antonyms: sane
adjective
mentally deranged
Synonyms: absurd, batty, bedlamite, cracked, crazy, daffy, daft, demented, eccentric, enthusiastic, foolish, gung ho, harebrained, insane, irrational, keen, kooky, loony, lunatic, mad, out of one’s mind, ridiculous, touched, unusual, wacky, warm, zealous
Antonyms: balanced, calm, sane, well