Synonyms of unconventional

1 Syllable

rad, lewd, outré, fresh, beat, queer, rum

2 Syllables

kooky, funkier, queerer, oddball, outre, queerest, fresher, freaky, lewdest, flakier, gonzo, rummy, radder, birdy, screwy, schizo, rumer, odder, kinky, crazy, freshest, dottier, freakier, oddest, flaky, weirdo, funky, causal, dotty, freakish, quirky, rummier, kookier, far-out, way-out, offbeat, raddest, raffish

3 Syllables

advanced, reformist, informal, unfussy, unusual, bizarre, atypic, unrightful, half-cracked, foul-mouthed, unvirtuous, unique, outlandish, eccentric, broadminded, liberal, unwonted, unrighteous, uncommon, throwaway

4 Syllables

individual, low-pressure, free-and-easy, anarchistic, original, irregular, unorthodox, humanistic, avant-garde, atypical, libertarian, unbigoted, ultamodern, nonconformist

5 Syllables

unceremonious, idiosyncratic, generative, unordinary, uncustomary, liberalistic, unequitable

6 Syllables

uncharacteristic, latitudinarian, individualistic