noun, slang ·Common ·High school level

Definitions

Noun

1. 1
   A fool or idiot. derogatory, informal

   "You are a lunkhead! How could you be so stupid?"

2. 2
   a stupid person; these words are used to express a low opinion of someone's intelligence wordnet

Synonyms

All synonyms

blockheadboneheadduncedunderheadhammerheadknucklehead

Antonyms

All antonyms

brain surgeonrocket scientist

Example

More examples

"Of course it doesn't work you lunkhead, you've not plugged it in!"

Etymology

Probably from *lunk (perhaps an alteration of lump; compare hunk & hump), a diminutive of lump + head.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.