
Thickhead
Colloquial Insult
The term 'thickhead' is informal and can offend someone if used seriously.

He called me a thickhead when we argued, which really hurt my feelings.
Avoid in Formality
Don't use 'thickhead' in formal settings, such as job interviews or official documents.

In a business meeting, calling someone a thickhead would be completely inappropriate.
Playful Teasing
Sometimes 'thickhead' is used between friends as a joking rebuke.

You forgot the keys again? You're such a thickhead!
Compare with
BlockheadDoltDoofusDullardDunderheadIdiotNumbskullSimpleton
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