faithlessly
Adverb
Meaning
in a disloyal and faithless manner
Source: WordNetSynonyms
false
fraudulently
dishonestly
incredulously
basely
deceitfully
malevolently
disloyally
adulterously
perfidiously
falsely
disingenuously
treacherously
maliciously
unbelievingly
Show all synonyms
Antonyms
Examples
Unless we ardently and prayerfully devote ourselves to Christ's righteousness we do not only faithlessly revolt from our Creator, but we also abjure him as our Savior.
he behaved treacherously
his wife played him false