51 entries under dirty-dealing topic. ×

2
falsehearted(adjective, mean, bad, evil, low)
2
unethical(adjective, dishonest, immoral, deceitful, rotten)
2
unloyal(adjective, false, dishonest, dubious, unsound)
2
unpatriotic(adjective, fickle, untrue, untrustworthy, unprincipled)
1
adulterine(adjective, false, fickle, untrue, untrustworthy)
1
adulterous(adjective, false, fickle, untrue, untrustworthy)
1
amoral(adjective, fickle, untrustworthy, unprincipled)
1
changeful(adjective, false, dishonest, dubious, fickle)
1
committing perjury(expression, adjective, wrong, false, dishonest)
1
foresworn(adjective, false, fickle, untrue, untrustworthy)
1
moonlighting(adjective, false, fickle, untrue, untrustworthy)
1
not true to(expression, adjective, idiom, false, fickle)
1
of bad faith(expression, adjective, idiom, false, fickle)
1
perjurious(adjective, fickle, untrustworthy, unprincipled)
1
unconverted(adjective, false, dishonest, dubious, fickle)
1
undutiful(fickle, untrustworthy, unprincipled)
0
dirty dealing(expression, fickle, untrustworthy, unprincipled)
0
extracurricular(fickle, untrustworthy, unprincipled)
0
fly by night(expression, idiom, fickle, untrustworthy, unprincipled)
0
lubricious(fickle, untrustworthy, unprincipled)
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APASmart Define. (2016). perfidious thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/perfidious/thesaurus/synonyms
ChicagoSmart Define. 2016. "perfidious thesaurus" https://smartdefine.org/perfidious/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, perfidious thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/perfidious/thesaurus/synonyms>.
MLASmart Define. "perfidious thesaurus" 4 March 2016. Web. 28 September 2026. <https://smartdefine.org/perfidious/thesaurus/synonyms>