noun ·Moderate ·High school level

Definitions

Noun

1. 1
   An idiot; a fool. derogatory

   "You fathead! You forgot to put the milk in the fridge and now it's spoiled!"

2. 2
   a man who is a stupid incompetent fool wordnet
3. 3
   A cyprinid fish of the Mississippi valley, Pimephales promelas, the black-headed minnow.
4. 4
   A labroid food fish of California; the California sheephead. Semicossyphus pulcher.
5. 5
   A blobfish, Psychrolutes microporos

Show 1 more definition

6. 6
   Any of several species of fish of the genus Cubiceps

Synonyms

All synonyms

addlebrainaddleheadaddlepateairheadassweedbeefhead

Antonyms

All antonyms

brain surgeongeniusrocket scientist

Example

More examples

"You fathead! You forgot to put the milk in the fridge and now it's spoiled!"

Etymology

From fat + head.

Related phrases

fathead minnowcalifornia sheepheadpimephales promelas

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