costarring

/K OW0 S T AA1 R IH0 NG/
verb
  1. 1

    To perform with the billing of a costar.

    โ€œPeople thought his career was over but now he will get to costar on Broadway next month.โ€

Source: https://en.wiktionary.org/wiki/costar, https://en.wiktionary.org/wiki/costarring