fathead

fat +‎ head

• IPA^(key): /ˈfæt.hɛd/

fathead (plural fatheads)

1. (derogatory) An idiot; a fool.

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

   • 1932, Delos W. Lovelace, King Kong, published 1965, page 24:

     ‘We were getting a grand shot of a charging rhino when the cameraman got scared and bolted. The fathead!’

2. A cyprinid fish of the Mississippi valley, Pimephales promelas, the black-headed minnow.
3. A labroid food fish of California; the California sheephead. Semicossyphus pulcher.
4. A blobfish, Psychrolutes microporos
5. Any of several species of fish of the genus Cubiceps

• (derogatory): dunce, imbecile, lout, nincompoop, see also Thesaurus:idiot

• (antonym(s) of “derogatory”): genius

• fathead minnow

“fathead”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.