6
terrifying(adjective, unpleasant, awful, terrible, disgusting)
6
wrong(adjective, inexpedience)
6
yucky(adjective, nasty, offensive, unpleasant, awful)
5
Gorgonian(adjective, dull, disgusting, ugly, bad-looking)
5
abysmal(adjective, poor, awful, terrible, inferior)
5
dark
5
degenerate(adjective, bad, wrong, evil, nasty)
5
direful(adjective, awful, terrible, horrible, afraid)
5
dirty(adjective, evil, nasty, offensive, unpleasant)
5
dreaded(adjective, awful, terrible, horrible, afraid)
5
enormous(adjective, awful, terrible, horrible, afraid)
5
fiendish(adjective, wicked)
5
frumpish(adjective, dull, disgusting, ugly, bad-looking)
5
frumpy(adjective, dull, disgusting, ugly, bad-looking)
5
haggish(adjective, dull, disgusting, ugly, bad-looking)
5
icky(verb, adjective, person, rough, poor)
5
ignominious(adjective, disgusting, vicious, vile, hateful)
5
infernal(adjective, inexpedience)
5
inhuman(adjective, adverb, low, offensive, base)
5
insufferable(adjective, nasty, offensive, terrible, vile)
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APASmart Define. (2016). abominable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/abominable/thesaurus/synonyms
ChicagoSmart Define. 2016. "abominable thesaurus" https://smartdefine.org/abominable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, abominable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/abominable/thesaurus/synonyms>.
MLASmart Define. "abominable thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/abominable/thesaurus/synonyms>