Examples of “dumbass” in a Sentence

noun (vulgar slang) A stupid or foolish person.

• Only a dumbass would leave the car running with the keys inside.
• The dumbass walked off with my car keys and left me hers.

adj (vulgar slang) Stupid or foolish.

• I zipped my coat up to the neck, worried now that going to the march was more dumbass than I'd thought. It got closer—the only frigging thing in the road!—and I realized I was shaking. I couldn't move. — Jason Reynolds, Brendan Kiely (2015)
• That dumbass driver ruined my car!
• That was a dumbass thing to say in front of the boss.