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
Mekishana Pierre,
Entertainment Weekly,
30 June 2026
Along with her costars Matarazzo and McLaughlin, Brown lit up the Emmy red carpet in September 2016.
—
Skyler Caruso,
PEOPLE,
30 June 2026
Kristen Tauer,
Footwear News,
30 June 2026
Stranger Things costars Noah Schnapp and Millie Bobby Brown share a sweet moment at the Enola Holmes 3 Premiere on June 25 in New York City.
—
Brendan Le,
PEOPLE,
29 June 2026
See All Example Sentences for costar
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Noun
Shortly after Doherty's death, Spelling paid tribute to her late costar for a special edition of her MisSPELLING podcast.
—
Mekishana Pierre,
Entertainment Weekly,
30 June 2026
Along with her costars Matarazzo and McLaughlin, Brown lit up the Emmy red carpet in September 2016.
—
Skyler Caruso,
PEOPLE,
30 June 2026
Verb
Mia Rodgers and Kelsey Grammer portray the couple in the film, which also costars Andy Serkis, Ben Kingsley, and Mary-Louise Parker as Washington’s mother.
—
Kristen Tauer,
Footwear News,
30 June 2026
Stranger Things costars Noah Schnapp and Millie Bobby Brown share a sweet moment at the Enola Holmes 3 Premiere on June 25 in New York City.
—
Brendan Le,
PEOPLE,
29 June 2026
See All Example Sentences for costar
Cite this Entry
“Costar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/costar. Accessed 5 Jul. 2026.
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