1
trickiness(noun, dishonesty, treachery, fraud, deceit)
1
two-facedness(deception, division, dishonesty, deceit, falsehood)
1
two-timing(noun, fake, dishonesty, treachery, dodge)
1
twoness(deception, division, dishonesty, deceit, falsehood)
1
underhandedness(dishonesty, falseness, crookedness, deviousness, craftiness)
1
unscrupulousness(noun, dishonesty, treachery, fraud, deceit)
1
untrueness(noun, treachery, falseness, infidelity, unfaithfulness)
1
violation(noun, treachery, falseness, infidelity, unfaithfulness)
1
wiliness(noun, treachery, fraud, deceit, lying)
0
adultery(noun, duplicity, affair, unfaithfulness, faithlessness)
0
affair(noun, duplicity, unfaithfulness, faithlessness)
0
canard(deception, dishonesty, deceit, falseness, falsity)
0
cleverness(deviousness, craftiness, slipperiness)
0
continue
0
crime
0
dealing
0
deceptiveness(deception, dishonesty, deceit, falseness, falsity)
0
dichotomy
0
dirty business
0
disbelief(noun, doubt, dishonesty, treachery, deceit)
11 years ago|2.8k views|share |citing 
APASmart Define. (2015). perfidiousness thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/perfidiousness/thesaurus/synonyms
ChicagoSmart Define. 2015. "perfidiousness thesaurus" https://smartdefine.org/perfidiousness/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, perfidiousness thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/perfidiousness/thesaurus/synonyms>.
MLASmart Define. "perfidiousness thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/perfidiousness/thesaurus/synonyms>