cooperator
NounWordNet 3.0
Noun (1)
- an associate in an activity or endeavor or sphere of common interest“the musician and the librettist were collaborators”“sexual partners”Synonyms: collaboratorpartnerpardner
Webster's Dictionary (GCIDE)
Cooperator \Co*["o]p"er*a`tor\, n. [L.: cf. F. coop['e]rateur.] One who labors jointly with others to promote the same end. "Cooperators with the truth." --Boyle. [1913 Webster]