Word.ws English Dictionary

costar

/ˈkəʊstɑː(ɹ)/

costar noun: a person who shares star billing with another.

Noun

costar (plural costars)

  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.

Verb

costar (third-person singular simple present costars, present participle costarring, simple past and past participle costarred)

  1. (intransitive) To perform with the billing of a costar.
    • People thought his career was over but now he will get to costar on Broadway next month.
  2. (transitive) To feature (a number of star performers) jointly.
    • 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...2012 June 3, Nathan Rabin, “TV: Review: THE SIMPSONS (CLASSIC): “Mr. Plow” (season 4, episode 9; originally aired 11/19/1992)”, in (Please provide the book title or journal name)

Forms of costar

Noun
pluralcostars
Verb
third-person singular presentcostars
present participlecostarring
past participlecostarred
pastcostarred

Origin of costar

From co- + star.

Questions about costar

What does costar mean?
Costar means a person who shares star billing with another.
What part of speech is costar?
Costar can be a noun or a verb.
How do you pronounce costar?
Costar is pronounced /ˈkəʊstɑː(ɹ)/.
What is the plural of costar?
The plural of costar is costars.

Words near costar in the dictionary

  1. Costanoans
  2. Costantini
  3. Costantinis
  4. costapalmate
  5. costapalmately
  6. costar
  7. costard
  8. costardmonger
  9. costardmongers
  10. costards
  11. costarred

Source and license

Adapted from Wiktionary: costar (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-costar.wav.

Cite this entry: “costar.” Word.ws, https://word.ws/costar. Based on Wiktionary, CC BY-SA 4.0.