costar
/ˈkoʊˌstɑr/
noun
- A performer who shares star billing with another performer in a movie, play, or television show.
- He was excited to work with his famous costar on the new series.
- Her costar in the film won an award for best actor.
- The two costars became close friends during filming.
Synonyms
verb
- To appear as a costar alongside another performer.
- He is set to costar in a new comedy series.
- They costarred in three movies together.
- She will costar with a well-known actor in the upcoming drama.