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Fifth columnist has 8 synonyms. The top synonyms for fifth columnist are crypto, saboteur, fraternizer, underground, fifth column, Trojan horse, security risk, fellow traveler. Another word for fifth columnist is crypto. Browse the full list below.
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| Random | DefinitionA common synonym for fifth columnist is crypto. Other synonyms include saboteur, fraternizer, underground, fifth column.
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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