noun
fathead
FAT-hehd
noun
1
(informal) A stupid or foolish person.
"Only a fathead would leave the car unlocked in that neighbourhood."
How to Use Fathead
Learner’s notesIn plain EnglishAn insulting, old-fashioned way to call someone stupid.
When to use it
Informal and a bit dated; mostly used humorously or affectionately now rather than as a serious insult.
Word Forms
fatheads plural
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Only a _____ would leave the car unlocked in that neighbourhood.
Etymology
From "fat" plus "head".