collaborative /kəˈlæb.ə.ɹə.tɪv/adjective 1noun 1forms 3 adjective1 •Of, relating to, or done by collaboration.No need to thank me - it was a collaborative effort. noun1 •An organized group of people or entities who collaborate towards a particular goal.In the literature class, which is conducted by Prof. George J. Smith, lately of Central High School, and which is a collaborative of Dr. Farquhar's course, the students are pursuing their new course. — 1895 formscollaboratives · more collaborative · most collaborative