Fifth columnist
Synonyms for Fifth columnist
- saboteur
- renegade
- turncoat
- quisling
- traitor
- agent
- deserter
- defector
- double agent
- judas
- betrayer
- undercover agent
- operative
- collaborator
- secret agent
- mole
- spy
- plant
- subversive
- stool pigeon
- snake in the grass
- collaborationist
- infiltrator
- double-crosser
- apostate
- informer
- fraternizer
- foreign agent
- secret service agent
- double-dealer
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