fifth columnism
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fifth columnism — noun see fifth column … New Collegiate Dictionary
fifth column — noun Etymology: name applied to rebel sympathizers in Madrid in 1936 when four rebel columns were advancing on the city Date: 1936 a group of secret sympathizers or supporters of an enemy that engage in espionage or sabotage within defense lines… … New Collegiate Dictionary
fifth column — noun A group of people which clandestinely undermines a larger group, such as a nation, to which it is expected to be loyal. fifth columnism n. fifth columnist n … Wiktionary
