copromoter

noun

co·​pro·​mot·​er (ˌ)kō-prə-ˈmō-tər 

variants or co-promoter

plural copromoters or co-promoters

: one of two or more joint promoters

Leonard is a "crossover icon"—a term copromoter Bernie Dillon uses to describe Leonard's broad appeal in and out of boxing …

—William Nack

Word History

First Known Use

1884, in the meaning defined above