8
unreliably(adverb, undependably)
5
undependably
3
falsely
2
disloyally
2
faithlessly
2
impiously(adverb, impiously)
2
inaccurately
2
perfidiously
2
recreantly
2
traitorously
2
treacherously
2
untruely
2
untruly
1
adulterously
1
atheistically(adverb, impiously)
1
blasphemously(adverb, impiously)
1
cravenly
1
deceitfully
1
delusively
1
dishonestly
13 years ago|1.8k views|share |citing 
APASmart Define. (2013). unfaithfully thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unfaithfully/thesaurus/synonyms
ChicagoSmart Define. 2013. "unfaithfully thesaurus" https://smartdefine.org/unfaithfully/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2013, unfaithfully thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unfaithfully/thesaurus/synonyms>.
MLASmart Define. "unfaithfully thesaurus" 28 June 2013. Web. 20 September 2026. <https://smartdefine.org/unfaithfully/thesaurus/synonyms>