A person who helps an enemy that has taken over their country.
1) The Army Cheif warned that all quislings would be punished without mercy.
2) He had the Quisling owner of the factory arrested.
Vudkin Quisling- 1945 Norwegian politician who collaborated with the Nazis.
apostate, traitor, snake, back-stabber, double-crosser, double-dealer
jingoist, loyalist, companion