tu oseras

will dare, will have the courage to

→ oser
oser to dare, to have the nerve to + as you (singular) future ending
verb · 2nd-person singular, future tense Rare #51,178
will dare, will have the courage to Used in questions and negative statements as well as affirmative ones.
FR: Tu oseras lui parler demain.
EN: You’ll dare to talk to him tomorrow.
Conjugation of oser
Indicative future
SingularPlural
First oserai —
Second oseras —
Third osera —

Tu n'oseras jamais !

You’d never dare!

— Yi Yi (2000)

Oseras-tu le signer ?

Will you dare to sign it?

— Le Maître d'armes (2006)

Tu n'oseras pas !

You wouldn’t dare!

— Le Château ambulant (2004)

Si, mais est-ce que tu oseras suivre ?

Yes, but will you dare to follow?

— Ong-Bak (2003)