4
perfidiousness(noun, fake, doubt, dishonesty, treachery)
4
apostasy(noun, treachery, falseness, disloyalty, betrayal)
4
falseness(noun, fake, deception, doubt, dishonesty)
4
treacherousness(noun, plan, fake, doubt, trust)
4
unfaithfulness(noun, deception, doubt, dishonesty, treachery)
4
conspiracy(noun, plan, scheme, plot, collusion)
4
defection(noun, disobedience, disloyalty, infidelity)
4
sabotage(noun, damage)
3
subversion(noun, damage, deception, agitation, destruction)
3
subversiveness
3
breach of faith(noun, expression, idiom, deception, treachery)
3
breach of trust(noun, expression, idiom, treachery, falseness)
3
business
3
crime(noun, deception, treachery, disloyalty, sedition)
3
deception(noun, dishonest, dishonesty, treachery, deceit)
3
disobedience(noun, agitation, disobedience)
3
double-cross(noun, fake, treachery, dodge, deceit)
3
insubordination(noun, agitation, disobedience)
3
secession
3
sellout(noun, fake, deception, dishonesty, treachery)
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APASmart Define. (2015). treason thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/treason/thesaurus/synonyms
ChicagoSmart Define. 2015. "treason thesaurus" https://smartdefine.org/treason/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, treason thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/treason/thesaurus/synonyms>.
MLASmart Define. "treason thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/treason/thesaurus/synonyms>