co-star

noun

1. an actor who shares star billing with another

verb

1. to share star billing (with another actor)

2. (tr) to present as sharing top billing

   the film co-starred Mae West and W. C. Fields

Example Sentences

Walton Goggins, the “White Lotus” breakout who co-starred with Gregory in “Vice Principals,” the HBO series which premiered in 2016 and lasted for two seasons, was among several performers who paid tribute on social media.

From Los Angeles Times

And he was a creator and writer on the Showtime series “The Curse,” in which he co-starred as a manipulative television producer with Nathan Fielder and Emma Stone.

From Los Angeles Times

Carroll Baker, who co-starred with Dean in his last movie, “Giant,” recalled how the cast learned of his death.

From Los Angeles Times

Matthew and Kay co-star in the upcoming film “The Lost Bus,” where she plays his mother.

From Los Angeles Times

Voice actors rarely record with their co-stars, says Zach, so it's down to him to imagine what others are doing in a scene for his own lines to "make emotional sense".

From BBC