Synonyms|106Antonyms|65|Broader|0Narrower|0Related|44
10
traitorously(adverb, dishonestly, deceitfully, fraudulently, untruthfully)
7
faithlessly(adverb, deceitfully, fraudulently, untruthfully)
5
deceitfully(adverb, dishonestly, fraudulently, untruthfully)
4
dishonestly(adverb, dishonestly, deceitfully, fraudulently, untruthfully)
4
falsely(adverb, deceitfully, fraudulently, untruthfully)
3
treasonably
3
dangerously(adverb, dangerously)
3
fraudulently(adverb, dishonestly)
3
hazardously(adverb, dangerously)
3
hypocritically(adverb, dishonestly)
3
perfidiously(adverb, deceitfully, fraudulently, untruthfully)
3
perilously(adverb, dangerously)
3
unfaithfully(adverb, deceitfully, fraudulently, untruthfully)
3
unscrupulously(adverb, dishonestly, deceitfully, fraudulently, untruthfully)
2
back
2
corruptly(adverb, dishonestly)
2
crookedly(adverb, dishonestly, deceitfully, fraudulently, untruthfully)
2
deviously(adverb, dishonestly)
2
dishonorably(adverb, dishonestly, deceitfully, fraudulently, untruthfully)
2
disloyally
For more, visit Treacherously on Power Thesaurus
11 years ago|2.5k views|share |citing 
APASmart Define. (2015). treacherously thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/treacherously/thesaurus/synonyms
ChicagoSmart Define. 2015. "treacherously thesaurus" https://smartdefine.org/treacherously/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, treacherously thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/treacherously/thesaurus/synonyms>.
MLASmart Define. "treacherously thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/treacherously/thesaurus/synonyms>