podría haberse

could have

→ poder
phrase Rare #47,617
could have Used before a past participle; depending on the sentence, it can describe something someone could have done or something that could have happened to them.
SP: Podría haberse quedado en casa.
EN: He could have stayed home.

Ella podría haberse encontrado ayer con él.

She could have met him yesterday.

Podría haberse despertado.

He might have woken up.

— Había una vez en Hollywood (2019)

Ha tenido suerte, podría haberse matado.

He was lucky, he could have been killed.

— Contratiempo (2017)

Podría haberse vendido.

It could have been sold.

— Perros de Reserva (1992)

Creo que ese accidente podría haberse evitado.

I think that accident could have been avoided.