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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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A federal judge ruled Friday that Blake Lively is entitled to attorneys’ fees associated with the high-profile legal battle between her and “It Ends With Us” co-star Justin Baldoni.

From The Wall Street Journal • Jun. 12, 2026

It's a quality that co-star Amy Adams says makes Cady a "patient predator."

From Barron's • Jun. 3, 2026

Two years later, Travolta’s close friend and “Grease” co-star, Olivia Newton-John, died after her own lengthy battle with breast cancer.

From Salon • Jun. 2, 2026

Cailee Spaeny looks at Charles Melton, her co-star on the Netflix limited series “Beef,” asking for help.

From Los Angeles Times • May 27, 2026

You just can’t have a scene without a co-star.

From "Better Nate Than Ever" by Tim Federle

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