- Definitions|2
- Thesaurus|402
- Abbreviations|0
| homicide | |
| imposture | |
| inaccuracy(deception, dishonesty, deceit, falseness, falsity) | |
| incorrectness(falseness, inaccuracy, wrongness, erroneousness, spuriousness) | |
| insincerity(deception, dishonesty, deceit, falseness, falsity) | |
| lewdness(noun, duplicity, affair, unfaithfulness, faithlessness) | |
| lie(deception, dishonesty, deceit, falseness, falsity) | |
| lying(noun, treachery, deceit, duplicity, falseness) | |
| manslaughter | |
| misconception(wrongness, erroneousness, mistakenness) | |
| misinterpretation(wrongness, erroneousness, mistakenness) | |
| misrepresentation(deception, dishonesty, deceit, falseness, falsity) | |
| mistakenness(wrongness, erroneousness) | |
| misunderstanding(wrongness, erroneousness, mistakenness) | |
| mouth honor(expression, idiom, improbity) | |
| murder | |
| prevarication(deception, dishonesty, deceit, falseness, falsity) | |
| roguery | |
| scam(noun, fake, treachery, dodge, deceit) | |
| sham(deception, dishonesty, deceit, falseness, falsity) |
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| APA | Smart Define. (2015). perfidiousness thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/perfidiousness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "perfidiousness thesaurus" https://smartdefine.org/perfidiousness/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, perfidiousness thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/perfidiousness/thesaurus/synonyms>. |
| MLA | Smart Define. "perfidiousness thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/perfidiousness/thesaurus/synonyms> |