Synonyms of goofball

1 Syllable
dolt, dweeb, fool, dork, jerk, nerd, oaf
2 Syllables
weirdo, muddler, techie, fumbler, bumblers, fumblers, duffer, goober, muddlers, goobers, bunglers, bumbler, bungler, duffers, trekkie
3 Syllables
addlebrain, featherbrain
4 Syllables
mismanager