- Definitions|2
- Thesaurus|1.8k
- Abbreviations|0
55 entries under immoral topic. ×
| treacherous(adjective, mean, hard, wrong, continue) | |
| dishonest(adjective, wrong, false, deceitful) | |
| faithless(noun, adjective, mean, continue, base) | |
| disloyal(adjective, mean, continue, base, false) | |
| deceitful(noun, adjective, wrong, false, dishonest) | |
| unfaithful(noun, adjective, mean, continue, base) | |
| unscrupulous(adjective, mean, hard, evil, rough) | |
| untrustworthy(adjective, mean, base, false, dishonest) | |
| crooked(adjective, mean, base, false, dishonest) | |
| corrupt(adjective, mean, bad, base, false) | |
| two-faced(adjective, mean, wrong, base, false) | |
| double-dealing(noun, adjective, mean, wrong, base) | |
| crafty(adjective, false, corrupt, dishonest) | |
| slippery(adjective, false, corrupt, dishonest) | |
| foul(adjective, mean, bad, base, dishonest) | |
| villainous(adjective, mean, bad, evil, base) | |
| inconstant(adjective, false, dishonest, rotten) | |
| underhand(adjective, false, corrupt, dishonest) | |
| unprincipled(adjective, false, dishonest, deceitful) | |
| wicked(adjective, mean, base, false, dishonest) |
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| APA | Smart Define. (2016). perfidious thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/perfidious/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "perfidious thesaurus" https://smartdefine.org/perfidious/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, perfidious thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/perfidious/thesaurus/synonyms>. |
| MLA | Smart Define. "perfidious thesaurus" 4 March 2016. Web. 27 September 2026. <https://smartdefine.org/perfidious/thesaurus/synonyms> |