noun
knucklehead
NUHKL-hehd
noun
1
An informal term for a stupid or foolish person.
"Stop messing about, you knucklehead, and get in the car."
How to Use Knucklehead
Learner’s notesIn plain EnglishA friendly or mildly mocking word for someone acting foolishly.
When to use it
Informal and usually good-natured rather than genuinely insulting.
Word Forms
knuckleheads plural
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Etymology
From knuckle + head, on the model of similar informal insults.