verb (used without object), co·starred, co·star·ring.
verb (used with object), co·starred, co·star·ring.
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Example sentences from the Web for costar
She said that her co-star, Alfre Woodard, talked to her about it a cocktail party that night.
He talks about the first sexual encounters he had with a man, a co-star from when he was starring in Rent on Broadway.Choose Your Own Neil Patrick Harris: The Star on ‘Doogie,’ ‘Gone Girl,’ Gay Sex and More|Kevin Fallon|October 10, 2014|DAILY BEAST
Both Sheldon Leonard, who created the show, and Robert Culp, who was his co-star, were socially conscious.A Full-Length Bill Cosby Portrait: From Track Star to Ugly Sweaters|Scott Porch|September 24, 2014|DAILY BEAST
The story of how it was orchestrated—by co-star Julianna Margulies, no less—has been endearingly documented.Josh Charles on Life After ‘The Good Wife’ and His Insane Movie ‘Bird People’|Kevin Fallon|September 13, 2014|DAILY BEAST
So, Streep rewrote much of her dialogue, which led to tension with her co-star, Hoffman, who felt she was trying to upstage him.Co-Stars Who Hated Each Other: Ryan Gosling and Rachel McAdams in 'The Notebook' and More|Marlow Stern|July 4, 2014|DAILY BEAST