The phrase "an active collaborator" is correct and usable in written English.
It can be used to describe someone who is actively involved in a collaborative effort or project.
Example: "In our research project, Sarah has been an active collaborator, contributing valuable insights and feedback throughout the process."
Alternatives: "a proactive partner" or "an engaged contributor".
During World War II he was an active collaborator with the Nazis.
Godard himself has described her as a "woman of action", an active collaborator in those early pictures.
He became an active collaborator with Gilberto Freyre and others in the northeastern regionalist movement and produced a great deal of "Afro-Brazilian" poetry in that vein throughout the 1930s.
No indisputable smoking gun may ever be found, but it is absurd to claim -- in the face of what we already know -- that Iraq is not an active collaborator with, harborer of, and source of sophisticated training and unconventional weaponry for bin Laden's world terror network.
What is striking about these very different works, which are also being screened in Mexico City, is the way they seem to absorb Mr. Adachi's sheer presence, treating him not simply as a traditional documentary subject but in many ways as an active collaborator.
Solomon is a clinical lecturer in international eye health and is affiliated with the London School of Hygiene & Tropical Medicine (LSHTM), a research-led postgraduate school of public health and an active collaborator of the WHO programme.
The reader is the author's active collaborator.
Not so at "Fuerzabruta," where you are expected to be a semi-active collaborator in the fanciful proceedings.
Even without such a mass-media spotlight as CNN, mechanisms that highlight and confer social status can be an effective motivator for active collaborators.
Only two GPs considered that research in general practice was a means to value patients as active collaborators, who might even be paid for their participation (GP3).
Left behind were those who had been loyal to Pakistan, some of them active collaborators.
