2
debauched(adjective, dishonest, immoral, rotten, untrustworthy)
2
dishonorable(adjective, mean, bad, evil, base)
2
dissembling(adjective, wrong, false, dishonest, incorrect)
2
double(false, dishonest, deceitful, slick, hypocritical)
2
double-crossing(adjective, false, dishonest, changeable, fickle)
2
erratic(adjective, changeable, indecisive, inconsistent)
2
evil(adjective, mean, bad, wicked, dishonest)
2
false-hearted(adjective, continue, false, trust, untrue)
2
falsehearted(adjective, mean, bad, evil, low)
2
fly-by-night(adjective, false, dishonest, deceitful, unreliable)
2
fly by night(adjective, unreliable, insecure, treacherous, incalculable)
2
foxy
2
frivolous(adjective, changeable, untrue, indecisive, inconsistent)
2
heretical
2
indecisive(adjective, uncertain, hesitant, dubious, changeable)
2
irresolute(adjective, uncertain, unsettled, hesitant, dubious)
2
knavish(adjective, dishonest, immoral, cunning, rotten)
2
mercurial(adjective, changeable, indecisive, inconsistent)
2
mutable(adjective, changeable, indecisive, inconsistent)
2
not true to(expression, adjective, idiom, false, fickle)
11 years ago|16k views|share |citing 
APASmart Define. (2015). faithless thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/faithless/thesaurus/synonyms
ChicagoSmart Define. 2015. "faithless thesaurus" https://smartdefine.org/faithless/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, faithless thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/faithless/thesaurus/synonyms>.
MLASmart Define. "faithless thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/faithless/thesaurus/synonyms>