coscenarist

noun

co·​sce·​nar·​ist (ˌ)kō-sə-ˈner-ist 

variants or co-scenarist

plural coscenarists or co-scenarists

: someone who writes screenplays or scripts with another

A master of screenwriting structure, Stone and his co-scenarist Kieran Fitzgerald keep a stunning number of ideas and subplots in complementary balance.

—Jim Hemphill

Word History

First Known Use

1925, in the meaning defined above