Costar
noun, verb ·Rare ·Advanced level
Definitions
- 1 A person who shares star billing with another.
"The once famous actor objected to his costar having a bigger dressing room."
- 2 A person who slightly lacks the status to be considered a star.
"Alas, always a costar but never a star."
- 1 To perform with the billing of a costar. intransitive
"People thought his career was over but now he will get to costar on Broadway next month."
- 2 To feature (a number of star performers) jointly. transitive
"Purchasing a snowplow transforms Homer into a new man. Mr. Burns' laziest employee suddenly becomes an ambitious self-starter who buys ad time on local television at 3:17 A.M^([sic]) (prime viewing hours, Homer gingerly volunteers, for everyone from alcoholics to the unemployable to garden-variety angry loners) and makes a homemade commercial costarring his family."
Example
More examples"The once famous actor objected to his costar having a bigger dressing room."
Etymology
From co- + star.
More for "costar"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.