se negaría a

would refuse to

→ se
phrase Rare #45,088
would refuse to A conditional form of negarse a, used to say that someone would refuse to do something.
SP: Pensé que se negaría a ayudarme.
EN: I thought he would refuse to help me.

No sabía que Tom se negaría a hacer eso.

I didn't know Tom would refuse to do that.

Yo no sabía que Tom se negaría a hacer eso.

I didn't know Tom would refuse to do that.

Laura sabía que usted se negaría a confesar.

Laura knew you would refuse to confess.

— Contratiempo (2017)

Quedaba claro que Tom no se negaría a hacerlo.

It was clear that Tom wouldn't refuse to do it.