co-star
US /ˈkoʊˌstɑːr/
UK /ˈkoʊˌstɑːr/

1.
coprotagonista, coestrella
one of two or more main actors in a film or play
:
•
She played opposite her long-time friend as a co-star in the new movie.
Ella actuó junto a su amigo de toda la vida como coprotagonista en la nueva película.
•
The two actors have been co-stars in several successful TV series.
Los dos actores han sido coprotagonistas en varias series de televisión exitosas.
1.
coprotagonizar, actuar junto a
to star with another actor or actors in a film or play
:
•
He will co-star with a famous actress in the upcoming drama.
Él coprotagonizará con una actriz famosa en el próximo drama.
•
They decided to co-star in a romantic comedy.
Decidieron coprotagonizar una comedia romántica.