fifth column

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  • noun

Synonyms for fifth column

a subversive group that supports the enemy and engages in espionage or sabotage

References in periodicals archive ?
Even if they know they have a readymade 5th column willing to betray SL for the proverbial 30 pieces of silver and pretend to kiss the SL flag.
Issue 15: Anniversary allows City of Heroes to come to life with more in-depth gameplay experiences and storytelling options as it marks the revival of The 5th Column, the most popular villain group, through 10 new action-packed missions.
The expansion includes the villain group, the 5th Column, taken over by the mysterious Council in a war that will sweep through most of Paragon City's(TM) zones.
Though both the Council and 5th Column soldiers are in pitched battle with each other, with little provocation they will turn their fury against Paragon City's citizens and protectors.