variants
or co-star
plural costars or co-stars
: one of two or more main performers who star in a movie, play, etc.
… the star seems more relaxed and confident, and there's a bracing snap to the byplay between him and his costars.—
Mark Harris
Mark Harris
variants
or co-star
costarred or co-starred; costarring or co-starring
1
transitive
: to employ or present (someone) as one of two or more leading performers in a movie, play, etc.
Directed by Lasse Hallström … and costarring a fine ensemble …—Leonora Langley
Leonora Langley2
intransitive
: to appear with another star in a movie, play, etc.
Examples of costar in a Sentence
Recent Examples on the Web
Catherine Santino, People.com, 29 July 2025
Last week, as the costars posed on the red carpet at the film's London premiere, Anderson leaned up and gave Neeson a smooch on his cheek.
—Jay Stahl, USA Today, 29 July 2025
Caroline Blair, People.com, 30 July 2025
Sohn also played key roles on The Chi and Star Trek: Discovery, going on to costar on the ABC police procedural Will Trent.
—Derek Lawrence, EW.com, 29 July 2025
See All Example Sentences for costar
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Noun
In the snap, Lohan poses with costar Jamie Lee Curtis while wearing a metallic dress and smoky makeup look.
—Catherine Santino, People.com, 29 July 2025
Last week, as the costars posed on the red carpet at the film's London premiere, Anderson leaned up and gave Neeson a smooch on his cheek.
—Jay Stahl, USA Today, 29 July 2025
Verb
Garner costars as Gandy, an elementary school teacher at Maybrook, who comes to school one morning with only one child left in her classroom, played by Cary Christopher.
—Caroline Blair, People.com, 30 July 2025
Sohn also played key roles on The Chi and Star Trek: Discovery, going on to costar on the ABC police procedural Will Trent.
—Derek Lawrence, EW.com, 29 July 2025
See All Example Sentences for costar
Cite this Entry
“Costar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/costar. Accessed 6 Aug. 2025.
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