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Fifth columnist has 8 synonyms. The top synonyms for fifth columnist are fellow traveler, security risk, Trojan horse, fifth column, underground, fraternizer, saboteur, crypto. Browse the full list below.
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| Random | DefinitionA common synonym for fifth columnist is fellow traveler. Other synonyms include security risk, Trojan horse, fifth column, underground.
Fifth columnist has 8 synonyms listed on Thesaurasize.
(n): a member of a clandestine subversive organization who tries to help a potential invader
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