2
derelict
2
devious(noun, adjective, mean, bad, base)
2
dishonorable(adjective, mean, bad, evil, base)
2
disreputable(adjective, unpredictable, fickle, variable, undependable)
2
double-crossing(adjective, false, dishonest, dubious, changeable)
2
dubious(adjective, false, dishonest, deceitful, unpredictable)
2
erratic(adjective, unpredictable, changeable, fickle, variable)
2
fallen(adjective, impious)
2
fictitious
2
foresworn(adjective, false, fickle, untrue, untrustworthy)
2
frivolous(adjective, changeable, untrue, indecisive, inconsistent)
2
godless(adjective, impious)
2
immoral(wicked, dishonest, deceitful, unethical, cheating)
2
incontinent(adjective, false, untrue, disloyal, adulterous)
2
indecisive(adjective, changeable, inconsistent)
2
infidel
2
insurgent
2
irreligious(adjective, impious)
2
irresolute(adjective, changeable, untrue, frivolous, indecisive)
2
irresponsible(adjective, false, dishonest, deceitful, unpredictable)
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APASmart Define. (2015). unfaithful thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/unfaithful/thesaurus/synonyms
ChicagoSmart Define. 2015. "unfaithful thesaurus" https://smartdefine.org/unfaithful/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, unfaithful thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/unfaithful/thesaurus/synonyms>.
MLASmart Define. "unfaithful thesaurus" 14 April 2015. Web. 1 October 2026. <https://smartdefine.org/unfaithful/thesaurus/synonyms>