lunatic

Synonyms: absurd baked balmy bananas bonkers cracked crazed daft demented deranged dippy flaky flipped out foolish freaked out fried idiotic insane irrational kooky loco maniac maniacal nonsensical nutty preposterous psyched out psychotic schizoid screwy stupid unsound whacko zany

Antonyms: healthy sane sensible

Synonyms: crackpot crank cuckoo demoniac flake fruitcake kook lamebrain loon maniac neurotic nut paranoid psycho psychopath psychotic scatterbrain schizophrenic sociopathic

Antonyms: sane