260 entries under adjective topic. ×

40
treacherous(mean, hard, wrong, continue)
27
dishonest(wrong, false, immoral, deceitful)
26
traitorous(mean, continue, base, false)
23
false(noun, mean, wrong, continue)
22
faithless(noun, mean, continue, base)
21
disloyal(mean, continue, base, false)
21
deceitful(noun, wrong, false, dishonest)
19
hypocritical(noun, mean, bad, base)
19
unfaithful(noun, mean, continue, base)
18
unscrupulous(mean, hard, evil, rough)
18
untrustworthy(mean, base, false, dishonest)
16
crooked(mean, base, false, dishonest)
14
corrupt(mean, bad, base, false)
14
two-faced(mean, wrong, base, false)
13
untrue(noun, continue, false, dishonest)
13
insidious(tricky, sneaky, improbity)
12
double-dealing(noun, mean, wrong, base)
12
lying(noun, false, dishonest, deceitful)
12
recreant(mean, continue, base, false)
11
insincere(false, dishonest, deceitful, lying)
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APASmart Define. (2016). perfidious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/perfidious/thesaurus/synonyms
ChicagoSmart Define. 2016. "perfidious thesaurus" https://smartdefine.org/perfidious/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, perfidious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/perfidious/thesaurus/synonyms>.
MLASmart Define. "perfidious thesaurus" 4 March 2016. Web. 24 September 2026. <https://smartdefine.org/perfidious/thesaurus/synonyms>