co-star
UK: ˈkəʊ stɑː | US: ˈkoʊ stɑːr
n. an actor who shares equal prominence with another actor in a performance
v. to perform alongside another actor as a lead or equal
The word "co-star" combines the prefix "co-" (from Latin "com-," meaning "together" or "with") and "star" (from Old English "steorra," later evolving to denote a prominent performer). The term emerged in the early 20th century with the rise of collaborative film and theater productions, reflecting shared billing between actors of equal status. The prefix "co-" logically extends the concept of a "star" to imply partnership rather than solo prominence.
She will co-star with him in the upcoming romantic comedy.
The two actors became close friends after co-starring in the Broadway play.
His first major role was as a co-star in an indie film.
The director decided to co-star the veteran actor with a newcomer.
Their chemistry as co-stars earned critical acclaim.