5
secularism(noun, doubt, uncertainty, dissent, reservation)
5
traitorousness(noun, continue, deception, doubt, trust)
4
agnosticism(noun, difficulty, anxiety, confusion, doubt)
4
apostasy(noun, failure, doubt, uncertainty, failing)
4
bad faith(noun, expression, idiom, treachery, duplicity)
4
business
4
defection(noun, failure, doubt, uncertainty, failing)
4
scepticism
4
skepticism(noun, verb, difficulty, anxiety, confusion)
3
changefulness
3
cunning(noun, deception, dishonesty, treachery, fraud)
3
deceit(noun, deception, dishonesty, treachery, fraud)
3
double-dealing(noun, fake, deception, dishonesty, treachery)
3
impiety(noun, doubt, uncertainty, dissent, reservation)
3
improbity(noun, dishonesty, treachery, fraud, deceit)
3
unbelief
2
adultery(noun, duplicity, affair, disloyalty, infidelity)
2
artifice(noun, deception, dishonesty, treachery, fraud)
2
backsliding(failure, failing, rejection, withdrawal, defection)
2
capriciousness(noun, indecisiveness, changeability)
10 years ago|4.2k views|share |citing 
APASmart Define. (2015). faithlessness thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/faithlessness/thesaurus/synonyms
ChicagoSmart Define. 2015. "faithlessness thesaurus" https://smartdefine.org/faithlessness/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, faithlessness thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/faithlessness/thesaurus/synonyms>.
MLASmart Define. "faithlessness thesaurus" 23 December 2015. Web. 26 September 2026. <https://smartdefine.org/faithlessness/thesaurus/synonyms>