16
misshapen(adjective, appearance, dislike, strange, disgusting)
16
offensive(adjective, evil, awful, terrible, vile)
16
unnatural(adjective, evil, nasty, harsh, dark)
15
abnormal(adjective, appearance, dislike, strange, disgusting)
15
execrable(adjective, awful, terrible, horrible, afraid)
15
mammoth(adjective, great, big, large, size)
15
massive(adjective, great, big, large, huge)
15
unspeakable(adjective, bad, atrocious, hidden, immense)
15
vast(adjective, great, big, large, size)
14
beastly(adjective, adverb, nasty, low, offensive)
14
dire(adjective, awful, terrible, horrible, afraid)
14
nasty(adjective, awful, violent, terrible, wild)
14
revolting(adjective, evil, nasty, offensive, awful)
13
giant(adjective, informal, big, large, size)
13
hellish(adjective, evil, nasty, harsh, offensive)
13
inhuman(adjective, adverb, evil, nasty, low)
13
malformed(adjective, appearance, dislike, strange, disgusting)
13
repugnant(adjective, evil, nasty, offensive, awful)
13
unsightly(adjective, appearance, dislike, strange, disgusting)
12
deplorable(adjective, wicked, endured)
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APASmart Define. (2016). monstrous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/monstrous/thesaurus/synonyms
ChicagoSmart Define. 2016. "monstrous thesaurus" https://smartdefine.org/monstrous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, monstrous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/monstrous/thesaurus/synonyms>.
MLASmart Define. "monstrous thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/monstrous/thesaurus/synonyms>