Synonyms of kooky

1 Syllable

odd, mad, droll, freak, beat, weird, bent, quaint, queer, rum, wild

2 Syllables

spacey, curious, queerer, schizoid, zaniest, goofy, apest, oddball, queerest, strange, madder, loony, cranky, cockeyed, loopy, crackers, spacy, rummy, funny, tomfool, ditsy, crazier, screwy, schizo, witless, nutty, maddest, craziest, rumer, odder, crazy, zanier, nuttiest, zany, aper, whacko, oddest, flaky, nuttier, loonier, funky, weirder, weirdest, freakish, foolish, quirky, rummier, goofier, offbeat, reckless, fooler

3 Syllables

erratic, off-the-wall, lunatic, abnormal, unusual, bizarre, airbrained, off-center, capricious, outlandish, eccentric, peculiar, softheaded, unscrewed, whimsical, aberrant, uncommon, quizzical, singular

4 Syllables

irrational, unnatural, cockamamy, unreasoning, cockamamie, irregular, imbecilic, anomalous, bedlamite

5 Syllables

unconventional, idiosyncratic, unbelievable, characteristic, uncustomary

7 Syllables

overventuresome