smart-ass
US /ˈsmɑːrt.æs/
UK /ˈsmɑːrt.æs/

1.
petit malin, prétentieux
a person who is irritating because they think they know everything and are quick to make clever, sarcastic remarks
:
•
Don't be such a smart-ass, just answer the question directly.
Ne sois pas un tel petit malin, réponds juste directement à la question.
•
He always has a smart-ass comment for everything.
Il a toujours un commentaire de petit malin pour tout.
1.
petit malin, prétentieux
behaving in an irritatingly superior and sarcastic way
:
•
His smart-ass remarks always get him into trouble.
Ses remarques de petit malin le mettent toujours dans l'embarras.
•
I'm tired of your smart-ass attitude.
J'en ai marre de ton attitude de petit malin.