noun
- an actor who shares top billing with another actor in a movie, play, or television show
verb
- to appear as a costar with another actor
Examples
- She was the costar in the romantic comedy alongside a famous leading man.
- The two costars had great chemistry on screen.
- He will costar with her in the upcoming thriller.
- The movie costars two Academy Award winners.
- Both costars received equal billing in the credits.
- They decided to costar together after working on separate projects.
- The director chose her as the costar for the lead actor.