certain

/sɛʁ.tɛ̃/
1.
adjectivemasculineSing

sure

certain

convinced

T'es certain qu'il vient ce soir ?

Are you sure he's coming tonight?

2.
determinermasculineSing

a certain

some

a particular

Ça fait un certain temps que je ne l'ai pas vu.

It's been a while since I last saw him.