Synonyms of foolheaded

1 Syllable
schtick, droll
2 Syllables
wacky, silly, antic, goofy, foolish, nutty, absurd, sappy, comic, daffy, jerky
3 Syllables
grotesque, outrageous, fantastic, farcical, risible, gelastic, ludicrous, slaphappy, hilarious, bizarre, comical, laughable
4 Syllables
contemptible, impossible, ridiculous, nonsensical, preposterous, incredible, derisory, harebrained
5 Syllables
unbelievable