Synonyms of batty

1 Syllable
schtick, mad, gump, maer, nuts
2 Syllables
wacky, loonier, silly, crazier, cuckoo, amok, screwy, nuttiest, apest, foolish, oddball, loco, madder, aper, brainsick, loony, nutty, maddest, craziest, goofus, absurd, moonstruck, crackers, clocker, boffo, nuttier, crazy
3 Syllables
insane, unhinged, half-baked, senseless, unscrewed, idiotic, fool-headed, haywire, deranged, squirrelly, comical
4 Syllables
schizophrenic, bedlamite