Knuckleheads Knuckleheads antonyms brains geniuses If you know antonyms for Knuckleheads, then you can share it. Suggest antonym for Knuckleheads Knuckleheads synonyms blockheads dunces birdbrains dunderheads twits halfwits dodos clods dumbbells dummkopfs dummies Full list of synonyms (55)
