co-star

British  

noun

1. an actor who shares star billing with another

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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

Adolescence, which has dominated the 2026 awards season, also won for best limited series, while co-star Stephen Graham - who plays Jamie's father - took best writer for the drama category alongside Jack Thorne.

From BBC

Her co-star Ayoade Bamgboye says making sketches feel distinctly British has been her "North Star from the very beginning" - and it feels like "there's always someone to catch you" on the team.

From BBC

"It was a decision that all of us girls came up with," Paul's co-star, Mikayla Matthews, said on Wednesday on social media.

From BBC

Straightforward storytelling was never the strong suit of the show, which relied very much on Mr. Murphy’s charisma and that of his co-stars, notably Sophie Rundle, who plays sister Ada Shelby.

From The Wall Street Journal

The video, a wedding scene from “The Drama,” shows Zendaya’s character posing alongside co-star Robert Pattinson’s, though his face is obscured by a picture of Holland.

From Los Angeles Times