64 entries under nasty topic. ×

17
treacherous(adjective, mean, hard, smooth, evil)
16
perfidious(adjective, mean, hard, evil, rough)
10
evil(adjective, mean, bad, hard, rough)
10
foul(adjective, mean, base, dirty)
9
knavish(adjective, hard, evil, rough)
9
shameless(adjective, hard, evil, rough)
9
dirty(adjective, bad, hard, wrong, rough)
9
dishonorable(adjective, mean, bad, hard, smooth)
5
mean(verb, adjective, bad, smooth, evil)
5
rotten(adjective, hard, evil, rough)
5
vile(adjective, hard, evil, rough)
4
despicable(adjective, hard, evil, rough)
4
malicious(adjective, mean, bad, hard, evil)
3
shameful(adjective, low, cruel, corrupt)
3
vicious(adjective, hard, evil, rough)
2
cruel(adjective, evil, corrupt, wicked)
2
dangerous(adjective, hard, evil, rough)
2
filthy(adjective, vulgar)
2
indecent(adjective, wrong, evil, corrupt)
2
low(adjective, corrupt, vulgar, unreasonable)
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APASmart Define. (2016). unscrupulous thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unscrupulous/thesaurus/synonyms
ChicagoSmart Define. 2016. "unscrupulous thesaurus" https://smartdefine.org/unscrupulous/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, unscrupulous thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unscrupulous/thesaurus/synonyms>.
MLASmart Define. "unscrupulous thesaurus" 24 March 2016. Web. 29 September 2026. <https://smartdefine.org/unscrupulous/thesaurus/synonyms>