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costar

or co-star

[ noun koh-stahr; verb koh-stahr ]
/ noun ˈkoʊˌstɑr; verb ˈkoʊˈstɑr /
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noun
a performer, especially an actor or actress, who shares star billing with another.
a performer whose status is slightly below that of a star.
verb (used without object), co·starred, co·star·ring.
to share star billing with another performer.
to receive billing of slightly less status than that of astar.
verb (used with object), co·starred, co·star·ring.
to present (two or more actors) as having equal billing or prominence.
to present as having slightly less status than that of a star.
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Origin of costar

An Americanism dating back to 1915–20; co- + star
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use costar in a sentence

British Dictionary definitions for costar

co-star

noun
an actor who shares star billing with another
verb -stars, -starring or -starred
(intr often foll by with) to share star billing (with another actor)
(tr) to present as sharing top billingthe 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
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