Synonyms of screwy

1 Syllable
weird, queer, schtick, daft, odd, mad, gump
2 Syllables
wacky, loonier, barmy, funky, dotty, kooky, barmier, birdy, dafter, crazier, crooked, schizoid, amok, daftest, goofy, oddball, apest, loco, strange, aper, quirky, loony, batty, nutty, whacko, craziest, wackier, absurd, wackiest, goofus, moonstruck, goofier, flaky, psycho, boffo, agee, flakier, offbeat, crazy
3 Syllables
off-center, half-cracked, incurving, insane, lunatic, confused, fool-headed, abnormal, outlandish, haywire, hare-brained, peculiar, glassy-eyed, uncommon, bizarre, comical
4 Syllables
schizophrenic, illogical, muddle-headed, irregular
5 Syllables
heteromorphic, unconventional, unbelievable