Việt gian
Việt gian ( chữ Hán: 越奸; lit. 'Vietnamese traitor') is a pejorative term referring to a Vietnamese person who betrays, compromises or acts against the interests of Vietnam. The term Việt gian first appeared in 1938, denoting Vietnamese who supported or would benefit from the Japanese fascists, in a manner similar to the Chinese term Hanjian.
Since 1945, the term has been employed extensively in the context of the Vietnamese civil conflicts, with both opposing sides, the communist-led Viet Minh and the non-communist nationalists, mutually applying it to one another. It continued to be used during the Vietnam War between North Vietnam and South Vietnam.