Synonyms of featherbrain

1 Syllable

dolt, klutz, clod, fool

2 Syllables

blockhead, spoiler, muddler, butcher, numskull, fumbler, foul-up, bumblers, fumblers, dunce, duffer, idiot, muddlers, muffer, donkey, bunglers, botcher, bumbler, bungler, duffers, goofball

3 Syllables

bonehead, harebrain, blunderer, addlebrain

4 Syllables

butterfingers, ignoramus, mismanager, incompetent