What is another word for fifth columnist?
Pronunciation: [fˈɪfθ kˈɒləmnˌɪst] (IPA) 
The phrase "fifth columnist" is often used to refer to someone who undermines a group or organization from within. Synonyms for this term might include "traitor," "turncoat," "saboteur," or "infiltrator." Other possible synonyms might include "spy," "double agent," "defector," or "collaborator." Each of these terms suggests someone who intentionally works against the interests of a larger group or organization, often for personal gain or ideological reasons. While these terms may carry slightly different connotations, they all capture the essence of someone who is actively working to undermine the group they are ostensibly part of.
