se atrevería a

would dare to

→ se
phrase Rare #47,959
would dare to Used before an infinitive to say that someone would have the nerve or courage to do something.
SP: Él se atrevería a decir la verdad.
EN: He would dare to tell the truth.

¿Quién se atrevería a casarse con ella?

Who would dare marry her?

— Acantilado Rojo (2008)

Mary no se atrevería a contármelo.

Mary wouldn’t dare tell me.

¿Qué clase de sacerdote se atrevería a coquetear?

What kind of priest would dare to flirt?

— Las flores de la guerra (2011)

Nunca se atrevería a burlarse de mí.

He would never dare to make fun of me.

— Escondido (2005)

Me rehúso a creer que el Sr. Brown se atrevería a robar mi tienda.

I refuse to believe that Mr. Brown would dare to rob my store.

— Paddington 2 (2017)