Synonyms of weirdest

1 Syllable

queer

2 Syllables

curious, funky, kooky, eerie, secret, fearful, oddball, haunting, uncouth, occult, strange, freaky, flaky, dreadful, ghastly, far-out, awful, spooky, creepy, kinky, ghostly

3 Syllables

magical, grotesque, uncanny, ominous, supernal, singular, mysterious, outlandish, eccentric, unearthly, peculiar, horrific

4 Syllables

awe-inspiring, inscrutable, unnatural

5 Syllables

preternatural, supernatural