6
rotten(adjective, bad, severe, low, awful)
6
terrifying(adjective, awful, terrible, horrible, afraid)
6
unattractive(adjective, plain, awful, ugly, revolting)
6
unbearable(adjective, awful, terrible, shocking, dreadful)
6
unlovely(adjective, appearance, dislike, disgusting, ugly)
6
unusual(adjective, shocking, different, unconformity, unnatural)
5
blatant(adjective, awful, terrible, horrible, afraid)
5
contemptible(adjective, shocking, shameful, disgraceful, disreputable)
5
corrupt(adjective, evil, low, offensive, violent)
5
dark
5
diabolical(adjective, shocking, unnatural)
5
distasteful(adjective, perverted, endured)
5
excessive(adjective, great, severe, extreme, serious)
5
exorbitant(adjective, shocking, ridiculous, absurd, shameful)
5
fugly(adjective, strange, look like)
5
hateful(adjective, evil, nasty, harsh, offensive)
5
humongous(adjective, great, big, large, size)
5
immoderate(adjective, shocking, shameful, disgraceful)
5
impressive(adjective, large)
5
infinite(size, huge, vast, immense, massive)
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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>