<p><strong>Noun</strong></p><ul><li>a person who works or cooperates with another on something; a coauthor, coproducer, etc.: She is currently at work on a new recording project with longtime collaborator Greg Timson.</li><li>a person who cooperates with an enemy nation or force, especially with an enemy occupying one’s country: Her book gives a detailed account of postwar Poland’s legal retribution against its Nazi collaborators.</li></ul><p><strong>End of Response</strong></p>