Definition of costar in English:

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Pronunciation: /ˈkōˌstär/


A leading actor or actress appearing in a movie, on stage, etc., with another or others of equal importance.
Example sentences
  • There was a particularly touching moment when the floor was opened up to questions and an elderly woman introduced herself as one of Pinsent's first co-stars on stage.
  • Benigni's film and his co-star, the child actor Giorgio Cantarini, are very much in the tradition of the neo-realist dependence on the reactions of children.
  • He was backed by one of his co-stars, British actress, Saffron Burrows, who agreed that ‘the eternal question of the futility of war’ was at the heart of Troy.


[no object]
1Appear in a production as a costar: she costarred with Robert De Niro in the movie version
More example sentences
  • It was a feather-light romantic comedy in which Brando co-starred with Sophia Loren.
  • But how can that happen to somebody who once co-starred with the likes of Humphrey Bogart, James Cagney and Gene Autry?
  • She also co-starred with Danny Kaye in The Five Pennies.
1.1 [with object] (Of a production) include as a costar: his latest movie costars Meryl Streep
More example sentences
  • He seems not to be enjoying that shoot, a mega-budget production co-starring Jim Caviezel and Richard Harris.
  • The film co-stars John Alderton and includes a cameo by US talk show host Jay Leno.
  • The movie will co-star Johnny Depp as a Scotland Yard detective, his second outing with a magnifying glass after last year's Sleepy Hollow.

For editors and proofreaders

Syllabification: co·star

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