certain
Meanings
Adjective
1. certain, guaranteed (sure, positive)
2. certain (specified, particular)
3. certain (of indefinite, unknown or simply unmentioned identity, quality or quantity) (prepositive to the noun it modifies, and usually preceded by an indefinite article)
Examples420
Il est certain qu'il viendra.
It is certain that he will arrive.
une victoire certaine
a sure victory
Je ne suis pas certain de qui l'a fait.
I'm not sure who did that.
Je ne suis pas certaine de qui l'a fait.
I'm not sure who did that.
Je suis certain que Tom l'a fait.
I'm positive Tom did that.
Je suis certain que Tom pourrait le faire.
I'm pretty sure Tom could do that.