castmate

noun

cast·​mate

ˈkast-ˌmāt also ˈkäst-

plural castmates

: a fellow member of a cast of actors

I look at some of my castmates and see all the great acting they're doing …

—Kristin Bauer van Straten, quoted in Tampa Bay Times, 14 June 2013

Word History

First Known Use

1931, in the meaning defined above

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