From Longman Dictionary of Contemporary Englishcollaboratorcol‧lab‧o‧ra‧tor /kəˈlæbəreɪtə $ -ər/ noun [countable] 1 BETRAYsomeone who helps their country’s enemies, for example by giving them information, when the enemy has taken control of their country → collaborate, collaboration Their job was to identify enemy collaborators.2 TOGETHERsomeone who works with other people or groups in order to achieve something, especially in science or art → collaborate, collaboration collaborators on a biography of Dickens
Examples from the Corpus
collaborator• Your closest collaborator is left out in the cold.• The three convicted collaborators have all been sentenced to death.• Sansom's work will be continued by his son and longtime collaborator, Chip.• For eight or nine years we were not only collaborators and partners, we were best friends.• Many were scripted by himself, and many edited by his valuable collaborator, Stewart MacAllister.• Over the years collaborator families have become very rich. 