dumbass

noun

dumb·​ass ˈdəm-ˌas 

variants or dumb-ass

plural dumbasses or dumb-asses

informal + impolite

: a foolish or stupid person : idiot

acting like a total dumbass

dumbass adjective

or dumb-ass

informal + impolite

This is a dumb-ass picture about dumb-ass men.

—Anthony Lane

Examples of dumbass in a Sentence

Recent Examples on the Web

The obvious — though not necessarily correct — assumption is that a big and dumbass engineering error is at fault here, a miscalculation that the structural columns of the old building would be able to carry the new stories on top and couldn’t. — Christopher Bonanos, Curbed, 14 July 2026

Just remember, there's a lot of dumbass coaches out there. — Austin Perry Outkick, FOXNews.com, 21 Apr. 2026

Not the way those dumbasses do it. — Literary Hub, 23 Jan. 2026

People are now on alert and hopefully ordering out for pizza, cracking open a sixer, and getting ready to chomp into this new dumbass classic. — Jordan Hoffman, EW.com, 7 Aug. 2025

Word History

Etymology

dumb entry 1 + ass entry 3

First Known Use

1934, in the meaning defined above