119 entries under immoral topic. ×

5
shameless(adjective, wrong, evil, corrupt, wicked)
5
unprincipled(adjective, bad, wrong, evil, violent)
4
baneful(adjective, evil, low, corrupt)
4
degraded(adjective, evil, low, corrupt)
4
knavish(adjective, wicked, dishonest, rotten)
4
opprobrious(adjective, bad, evil, wicked)
4
putrid(adjective, bad, evil, offensive, unpleasant)
4
unhealthy(adjective, mean, evil, low)
4
unscrupulous(adjective, corrupt, wicked, dishonest)
4
venal(adjective, low, dishonest, rotten)
3
crooked(adjective, wrong, corrupt, vicious, dishonest)
3
debased(adjective, wrong, evil, wicked)
3
perfidious(adjective, dishonest, rotten, untrustworthy)
3
revolting(adjective, bad, evil, offensive, unpleasant)
3
shady(adjective, wrong, corrupt, vicious, vile)
3
unethical(adjective, bad, wrong, evil, corrupt)
2
dirty(adjective, wrong, evil, offensive, unpleasant)
2
dishonest(adjective, wrong, corrupt, wicked)
2
dissolute(adjective, wrong, evil, low, corrupt)
2
harmful(bad, corrupt, sinful, injurious)
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APASmart Define. (2015). nefarious thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/nefarious/thesaurus/synonyms
ChicagoSmart Define. 2015. "nefarious thesaurus" https://smartdefine.org/nefarious/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, nefarious thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/nefarious/thesaurus/synonyms>.
MLASmart Define. "nefarious thesaurus" 8 October 2015. Web. 25 September 2026. <https://smartdefine.org/nefarious/thesaurus/synonyms>