5
unsupportable(adjective, endured)
5
very bad(adjective, awful, terrible, afraid)
5
yucky(adjective, offensive, awful, foul, disgusting)
4
great(tough, difficult, unpleasant, terrible, huge)
4
intense(adjective, strong, great, severe, violent)
4
baleful(adjective, awful, terrible, dreadful)
4
barbaric(adjective, terrible, vicious, shocking, brutal)
4
bloodcurdling(adjective, nasty, unpleasant, awful, terrible)
4
diabolical
4
disastrous
4
distressing(adjective, obscure, offensive, dark, awful)
4
extreme(adjective, great, severe, awful, serious)
4
fell(adjective, strong, severe, intense, unpleasant)
4
fulsome(adjective, inexpedience)
4
grewsome(adjective, endured)
4
harsh(adjective, great, huge, endured, massive)
4
inferior(adjective, common, usual, useless, worthless)
4
infernal(adjective, evil, terrible, wicked, immoral)
4
worthless(evil, miserable, useless, wretched, shameful)
3
tragical(adjective, awful, terrible, afraid)
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APASmart Define. (2016). horrible thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/horrible/thesaurus/synonyms
ChicagoSmart Define. 2016. "horrible thesaurus" https://smartdefine.org/horrible/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, horrible thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/horrible/thesaurus/synonyms>.
MLASmart Define. "horrible thesaurus" 3 April 2016. Web. 25 September 2026. <https://smartdefine.org/horrible/thesaurus/synonyms>