10
nefarious(adjective, bad, evil, low, corrupt)
10
preposterous(adjective, extreme, immoral, shocking, ridiculous)
10
villainous(adjective, evil, low, corrupt, wicked)
9
Brobdingnagian(adjective, big, huge, vast, immense)
9
brutal(adjective, adverb, severe, evil, nasty)
9
damnable(adjective, evil, awful, terrible, horrible)
9
despicable(adjective, evil, awful, terrible, disgusting)
9
detestable(adjective, evil, nasty, awful, foul)
9
distorted(adjective, strange, distortion, ugliness, look like)
9
infamous(adjective, evil, low, corrupt, shocking)
9
misproportioned(adjective, strange, distortion, ugliness, look like)
9
monster(noun, adjective, big, size)
9
savage(adjective, evil, rude, violent, wild)
8
sinful(adjective, evil, nasty, harsh, offensive)
8
barbaric(adjective, offensive, rude, awful, cruel)
8
barbarous(adjective, adverb, evil, nasty, low)
8
egregious(adjective, bad, awful, terrible, extreme)
8
ferocious(adjective, evil, nasty, harsh, rude)
8
intolerable(adjective, shocking, unnatural, endured)
8
painful(adjective, severe, evil, nasty, harsh)
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APASmart Define. (2016). monstrous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/monstrous/thesaurus/synonyms
ChicagoSmart Define. 2016. "monstrous thesaurus" https://smartdefine.org/monstrous/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, monstrous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/monstrous/thesaurus/synonyms>.
MLASmart Define. "monstrous thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/monstrous/thesaurus/synonyms>