Definition of jackass in US English:



  • 1A stupid person.

    • ‘First, you had every right to break up with me because I was a complete jackass and a moron and you had every right.’
    • ‘Please keep up the good work, including your relative distance from the Labor Party hack jackasses.’
    • ‘He's a jackass with a cocky attitude, and he's the reason why you and I have barely seen each other over the last month.’
    • ‘So then, I lined up the shot and it would've been a great goal but then some jackass from the other team sent a kick toward my knee and sent me sprawling to the ground.’
    • ‘Hey beautiful… don't worry about the jackasses in the school, tomorrow you will be loved again.’
    idiot, ass, halfwit, nincompoop, blockhead, buffoon, dunce, dolt, ignoramus, cretin, imbecile, dullard, moron, simpleton, clod
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  • 2A male ass or donkey.

    • ‘Normally I'd view these matters with detachment, but to find a race-horse among jackasses is an exciting thing, and a great occasion for the empire.’
    • ‘He could tame a stallion, breed a jackass, lead an army and charm the ladies.’
    • ‘If he had the ears of a horse he'd look like a jackass.’