Search Result for "fifth column":
Wordnet 3.0

NOUN (1)

1. a subversive group that supports the enemy and engages in espionage or sabotage; an enemy in your midst;
[syn: fifth column, Trojan horse]


The Collaborative International Dictionary of English v.0.48:

fifth column \fifth` col"umn\, n. [from a statement during the Spanish Civil War (1936) that the Falange had four columns of soldiers marching on the city, and a fifth column "already there" (i.e. sympathizers inside the Republican lines).] 1. a group of persons inside the battle lines of a territory engaged in a conflict, who secretly sympathize with the enemy, and who engage in espionage or sabotage; -- sometimes also referred to as a trojan horse. [RP] 2. Hence, any faction of persons within a group who secretly sympathize with an enemy, especially those who engage in activities harmful to the group; an enemy in one's midst; a group of traitors. [RP]
WordNet (r) 3.0 (2006):

fifth column n 1: a subversive group that supports the enemy and engages in espionage or sabotage; an enemy in your midst [syn: fifth column, Trojan horse]
Moby Thesaurus II by Grady Ward, 1.0:

22 Moby Thesaurus words for "fifth column": Judas-like, Trojan horse, Trojan-horse, betraying, collaborationist, collaborator, crypto, double-crossing, fellow traveler, fifth columnist, fraternizer, quisling, quislingistic, saboteur, security risk, subversive, traitorous, treasonable, treasonous, turncoat, two-timing, underground