55 entries under adverb topic. ×

10
traitorously(dishonestly, deceitfully, fraudulently, untruthfully)
7
faithlessly(deceitfully, fraudulently, untruthfully)
5
deceitfully(dishonestly, fraudulently, untruthfully)
4
dishonestly(dishonestly, deceitfully, fraudulently, untruthfully)
4
falsely(deceitfully, fraudulently, untruthfully)
3
treasonably
3
dangerously
3
fraudulently
3
hazardously
3
hypocritically
3
perfidiously(deceitfully, fraudulently, untruthfully)
3
perilously
3
unfaithfully(deceitfully, fraudulently, untruthfully)
3
unscrupulously(dishonestly, deceitfully, fraudulently, untruthfully)
2
corruptly
2
crookedly(dishonestly, deceitfully, fraudulently, untruthfully)
2
deviously
2
dishonorably(dishonestly, deceitfully, fraudulently, untruthfully)
2
disloyally
2
false
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APASmart Define. (2015). treacherously thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/treacherously/thesaurus/synonyms
ChicagoSmart Define. 2015. "treacherously thesaurus" https://smartdefine.org/treacherously/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, treacherously thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/treacherously/thesaurus/synonyms>.
MLASmart Define. "treacherously thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/treacherously/thesaurus/synonyms>