Exact Match:
- fifth column
- a subversive group that supports the enemy and engages in espionage or sabotage; an enemy in your midst
Synonyms:
- 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