collaborator Meaning, Definition & Usage

  1. noun someone who assists in a plot
    partner in crime; henchman; confederate.
  2. noun someone who collaborates with an enemy occupying force
    collaborationist; quisling.
  3. noun an associate in an activity or endeavor or sphere of common interest
    partner; cooperator; pardner.
    • the musician and the librettist were collaborators
    • sexual partners

WordNet

Col*lab"o*ra`tor noun
Etymology
L. collaborare to labor together; col- + laborare to labor: cf. F. collaborateur.
Definitions
  1. An associate in labor, especially in literary or scientific labor.

Webster 1913