3
traitorousness(noun, continue, doubt, trust, dishonesty)
2
corruption(noun, fake, dishonesty, treachery, fraud)
2
cunning(noun, deception, dishonesty, treachery, fraud)
2
deception(noun, division, dishonesty, deceit, falseness)
2
false-heartedness(noun, continue, doubt, trust, dishonesty)
2
falsehood(noun, deception, dishonesty, treachery, fraud)
2
flimflam(noun, fake, dishonesty, treachery, fraud)
2
fraud(noun, deception, doubt, dishonesty, treachery)
2
fraudulence(noun, deception, dishonesty, treachery, fraud)
2
graft(noun, dishonesty, treachery, cunning, fraud)
2
hypocrisy(noun, deception, division, dishonesty, deceit)
2
insidiousness(noun, dishonesty, treachery, fraud, deceit)
2
knavery(noun, improbity)
2
mendacity(noun, deception, dishonesty, treachery, fraud)
2
sharp practice(noun, expression, idiom, dishonesty, treachery)
2
treacherousness(noun, continue, fake, deception, doubt)
1
Judas kiss(expression, deception, division, dishonesty, deceit)
1
apostasy(noun, treachery, falseness, infidelity, unfaithfulness)
1
artifice(noun, deception, dishonesty, treachery, fraud)
1
bad faith(noun, expression, treachery, duplicity, falseness)
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APASmart Define. (2015). perfidiousness thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/perfidiousness/thesaurus/synonyms
ChicagoSmart Define. 2015. "perfidiousness thesaurus" https://smartdefine.org/perfidiousness/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, perfidiousness thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/perfidiousness/thesaurus/synonyms>.
MLASmart Define. "perfidiousness thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/perfidiousness/thesaurus/synonyms>