se habrá quedado

must have stayed

→ se
phrase Rare #54,023
must have stayed The future perfect often expresses a guess or assumption about what has already happened. Depending on context, quedarse can also mean “to become” or “to end up.”
SP: Se habrá quedado en casa.
EN: He must have stayed home.

Ya se habrá quedado tranquilo mi padre.

My father must have calmed down by now.

— Hable con ella (2002)

Uhura, si no recibe noticias nuestras, nadie se habrá quedado ahí.

Uhura, if you don't hear from us, then no one will have stayed there.

— Viaje a las estrellas II: La ira de Khan (1982)

¿Por qué no se habrá quedado con ella?

Why didn’t he stay with her?

— Familia (2023)

Se habrá quedado dormido por ahí.

He must have fallen asleep somewhere.

— Buenos Muchachos (1990)