conne

/kɔn/con
1.
nounfeminineSing

stupid woman; female idiot

Elle a encore oublié son portable — quelle conne !

She forgot her phone again — what an idiot!

Synonyms:idiote, imbécile, connasse
2.
adjectivefeminineSing

stupid; silly; pointless (used to call something unintelligent or ill-considered)

C'est une remarque vraiment conne, tu devrais pas le dire.

That's a really stupid remark, you shouldn't say that.

Synonyms:stupide, bête, idiote