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Definition of costar

costar

/ˈkoʊˌstɑːr/
co · star
Plural:costars
•
Adjective:costarring
•
Past Simple:costarred
•
Past Participle:costarred
•
Present Participle:costarring
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costar Lexical Profile

costar Game Scores & Validity

• noun

1

A performer who shares leading billing or a prominent role with one or more other actors in a film, play, or television production.

Example

"The actress praised her costar for making the long filming schedule so enjoyable."

Synonyms
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Antonyms
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• verb

1

To appear in a leading or featured role alongside another principal performer in a film, play, or television show.

Example

"The two veteran actors will costar in an upcoming historical drama this autumn."

2

To feature or cast a performer in a joint leading role (of a production or director).

Example

"The romantic comedy costars two rising talents from the independent theater scene."

Synonyms
View all synonyms for costar

• Nearby Words

cost
costa rica
costa rican
costar
costing
costless
costliness

Cite this Entry

Wordmom. (2026). Definition of Costar. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/costar
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