4
shameless(adjective, wrong, offensive, wicked, shocking)
4
squalid(adjective, taste, offensive, unpleasant, awful)
4
tragic(adjective, awful, terrible, horrible, afraid)
4
unclean(adjective, blue, taste, offensive, unpleasant)
4
unworthy(immoral, shameful, disgraceful, dishonorable, reprehensible)
4
very bad(adjective, awful, terrible, horrible, afraid)
3
abhorred(adjective, offensive, vile, hateful, atrocious)
3
acute(adjective, endured)
3
almighty(adjective, awful, terrible, horrible, afraid)
3
arrant
3
bad to the bone
3
barbaric(adjective, awful, terrible, vicious, shocking)
3
calamitous(adjective, evil)
3
carrion(noun, adjective, taste, awful, terrible)
3
chronic(adjective, awful, terrible, horrible, afraid)
3
crashing(adjective, awful, terrible, horrible, afraid)
3
creepy(adjective, dislike, disgusting, hate, yuck)
3
crying(adjective, monstrous, horrifying)
3
damned(adjective, taste, nasty, awful, terrible)
3
dark
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APASmart Define. (2015). heinous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/heinous/thesaurus/synonyms
ChicagoSmart Define. 2015. "heinous thesaurus" https://smartdefine.org/heinous/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, heinous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/heinous/thesaurus/synonyms>.
MLASmart Define. "heinous thesaurus" 15 October 2015. Web. 24 September 2026. <https://smartdefine.org/heinous/thesaurus/synonyms>