31
dishonest(adjective, mean, bad, smooth, wrong)
24
corrupt(adjective, mean, bad, wrong, evil)
21
unprincipled(adjective, bad, wrong, honest, false)
17
crooked(adjective, mean, bad, smooth, wrong)
17
deceitful(adjective, mean, bad, smooth, smart)
17
treacherous(adjective, mean, hard, smooth, evil)
16
perfidious(adjective, mean, hard, evil, rough)
16
sly(adjective, corrupt, negative, dishonest, immoral)
13
unconscionable(adjective, honest, corrupt, dishonest, immoral)
12
immoral(adjective, bad, wrong, evil, corrupt)
12
unethical(adjective, bad, wrong, honest, corrupt)
12
wicked(adjective, mean, evil, base, corrupt)
12
slippery(adjective, bad, wrong, false, negative)
11
underhanded(adjective, mean, base, false, corrupt)
11
artful(adjective, mean, smooth, negative, dishonest)
11
crafty(adjective, mean, smooth, smart, false)
10
conscienceless(adjective, honest, corrupt, dishonest, immoral)
10
devious(adjective, mean, base, corrupt, negative)
10
evil(adjective, mean, bad, hard, rough)
10
shady(adjective, bad, wrong, false, corrupt)
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APASmart Define. (2016). unscrupulous thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unscrupulous/thesaurus/synonyms
ChicagoSmart Define. 2016. "unscrupulous thesaurus" https://smartdefine.org/unscrupulous/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, unscrupulous thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unscrupulous/thesaurus/synonyms>.
MLASmart Define. "unscrupulous thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/unscrupulous/thesaurus/synonyms>