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co-star

British  

noun

  1. an actor who shares star billing with another

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. to share star billing (with another actor)

  2. (tr) to present as sharing top billing

    the film co-starred Mae West and W. C. Fields

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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His “Peaky Blinders” co-star Cillian Murphy remembered Neill as “one of the kindest, funniest and gentlest people, and one of the finest actors,” while Nicole Kidman celebrated Neill as “one of the greats.”

From Los Angeles Times Jul. 15, 2026

Damon’s co-star Tom Holland is slightly more hopeful.

From Salon Jul. 12, 2026

The show's star Jean Smart has already won four Emmys for her portrayal of Deborah Vance and is nominated once again, as is co-star Hannah Einbinder, who won her first Emmy last year.

From Barron's Jul. 8, 2026

He along with Houston co-star and producer Kevin Costner argued for an a cappella beginning and slow build.

From The Wall Street Journal Jun. 22, 2026

When I think about Mom’s stories—the thrilling tales about her years at Princeton—Jack was usually her co-star.

From "South of Somewhere" by Kalena Miller

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