"national traitor," especially during World War II in Nazi-occupied countries, "collaborationist," 1940, from Vidkun Quisling (1887-1945), Norwegian fascist politician who headed the puppet government during the German occupation of Norway in World War II; shot for treason after the German defeat. First used in London Times of April 15, 1940, in a Swedish context.
name of a genus of Old World monkeys, Modern Latin, from Portuguese macaca, fem. of macaco, a name from an African language of the Congo (compare macaque).
also a.w.o.l., military initialism (acronym) for absent without leave (itself attested by 1767 in a military context). In U.S. military use by 1917. According to the "Dictionary of Contemporary American Usage" (1957), pronounced as four letters in World War I, as a word in World War II.