collaborationist

[kuh-lab-uh-rey-shuh-nist]

noun

a person who collaborates with an enemy; collaborator.

Origin of collaborationist

First recorded in 1920–25; collaboration + -ist

Related formscol·lab·o·ra·tion·ism, nounnon·col·lab·o·ra·tion·ist, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for collaborationist

Contemporary Examples of collaborationist

But was my grandfather really more appalled by this than he was by the crimes of the collaborationist art dealers?
My Grandfather's War: Recovering the Art the Nazis Stole
Anne Sinclair
October 5, 2014
One was the relative autonomy that France had earned through its collaborationist government in Vichy.
Great New Reads
The Daily Beast
October 31, 2010