qu'adviendrait-il

what would happen

→ que
phrase Rare #44,922
what would happen A formal or literary way to ask what would happen or what would become of someone or something. Often followed by de: « Qu'adviendrait-il de toi ? » means “What would become of you?”
FR: Qu'adviendrait-il de notre projet sans votre soutien ?
EN: What would become of our project without your support?

Qu'adviendrait-il si l'impensable se produisait?

What would happen if the unthinkable happened?

Qu'adviendrait-il si un gros astéroïde frappait la Terre?

What would happen if a large asteroid struck Earth?

Si tu mourais, qu'adviendrait-il de ta famille?

If you died, what would happen to your family?

Et si je mourais, qu'adviendrait-il de toi?

And if I died, what would become of you?

— La Femme de ménage (2025)