50 entries under unfaithful topic. ×

40
treacherous(adjective, mean, hard, wrong, continue)
27
dishonest(adjective, wrong, false, immoral, deceitful)
26
traitorous(adjective, mean, continue, base, false)
23
false(noun, adjective, mean, wrong, continue)
22
faithless(noun, adjective, mean, continue, base)
21
disloyal(adjective, mean, continue, base, false)
21
deceitful(noun, adjective, wrong, false, dishonest)
18
untrustworthy(adjective, mean, base, false, dishonest)
14
two-faced(adjective, mean, wrong, base, false)
13
untrue(noun, adjective, continue, false, dishonest)
12
double-dealing(noun, adjective, mean, wrong, base)
12
recreant(adjective, mean, continue, base, false)
9
shifty(noun, adjective, wrong, false, dishonest)
8
deceptive(noun, adjective, wrong, false, dishonest)
8
slippery(adjective, false, corrupt, dishonest, immoral)
8
treasonable(adjective, mean, base, false, dishonest)
8
unreliable(adjective, wrong, false, dishonest, deceitful)
7
duplicitous(noun, adjective, mean, bad, base)
7
tricky(adjective, wrong, false, dishonest, deceitful)
6
inconstant(adjective, false, dishonest, immoral, rotten)
<123>
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APASmart Define. (2016). perfidious thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/perfidious/thesaurus/synonyms
ChicagoSmart Define. 2016. "perfidious thesaurus" https://smartdefine.org/perfidious/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, perfidious thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/perfidious/thesaurus/synonyms>.
MLASmart Define. "perfidious thesaurus" 4 March 2016. Web. 1 October 2026. <https://smartdefine.org/perfidious/thesaurus/synonyms>