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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.

“I think I’m losing my mind ... but I wake up every day, and I’m like, ‘What should I do, Co-Star?’

From Los Angeles Times • Apr. 14, 2026

She later drew on what she had learned about A.I. to develop Co-Star.

From New York Times • Jul. 4, 2023

Co-Star, an app that provides users with their astrological charts and daily horoscopes, has gained 5.3 million users since launching in 2017.

From Salon • Mar. 6, 2022

For me it was little things like seeing a Co-Star push notification show up on a character’s phone while they’re swiping on a dating app.

From Washington Post • Sep. 9, 2021

We’ve talked about this before, but it definitely gave me insight into your aversion to astrology and had me second-guessing the cutesy Co-Star form of astrology that I think most Americans are familiar with.

From Slate • Jul. 22, 2020

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