10
vicious(adjective, bad, open, light, wrong)
10
yellow(adjective, low, cowardly)
9
conscienceless(adjective, honest, corrupt, dishonest, immoral)
9
dishonourable
8
deceitful(adjective, low, false, corrupt, dishonest)
8
disreputable(adjective, bad, wrong, low, false)
8
licentious(adjective, open, light, corrupt, immoral)
8
treacherous(adjective, low, false, corrupt, dishonest)
8
venal(adjective, corrupt, dishonest, immoral, rotten)
8
wanton(adjective, open, light, free, evil)
7
criminal(adjective, evil, corrupt, unreasonable, dishonest)
7
debauched(adjective, open, light, evil, loose)
7
degenerate(adjective, open, light, wrong, evil)
7
devious(adjective, corrupt, dishonest, immoral, dubious)
7
shady(adjective, bad, wrong, false, corrupt)
7
shameful(adjective, bad, wrong, evil, low)
7
vile(adjective, bad, wrong, evil, violent)
7
wild(adjective, open, light, free, wicked)
6
felonious
6
flagitious
11 years ago|16k views|share |citing 
APASmart Define. (2015). unprincipled thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unprincipled/thesaurus/synonyms
ChicagoSmart Define. 2015. "unprincipled thesaurus" https://smartdefine.org/unprincipled/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, unprincipled thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unprincipled/thesaurus/synonyms>.
MLASmart Define. "unprincipled thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/unprincipled/thesaurus/synonyms>