68 entries under terrible topic. ×

3
hideous(adjective, bad, awful, disgusting)
3
horrid(appearance, awful, fear, disgusting)
3
mean(adjective, bad, severe, rough, nasty)
2
distressing(adjective, bad, tough, severe, rough)
2
ghoulish(awful, dreadful)
2
grievous(adjective, tough, severe, difficult, unpleasant)
2
lurid(adjective, awful, shocking, dreadful)
2
macabre(awful, shocking, dreadful, upsetting)
2
morbid(awful, shocking, dreadful, upsetting)
1
atrocious(bad, awful, horrible, shocking)
1
bad(awful, heavy, disgusting, shocking)
1
cruel(adjective, appearance, nasty, bleak)
1
eerie(adjective, awful, dreadful)
1
grand(adjective, great, big, awful)
1
merciless(adjective, appearance, tough, severe, rough)
1
ominous(adjective, appearance, unpleasant, awful)
1
ruthless(appearance, hopeless)
1
shameful(adjective, bad, nasty, awful)
1
sinister(adjective, appearance, unpleasant, awful)
1
unyielding(appearance, tough, severe, painful)
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APASmart Define. (2015). formidable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/formidable/thesaurus/synonyms
ChicagoSmart Define. 2015. "formidable thesaurus" https://smartdefine.org/formidable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, formidable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/formidable/thesaurus/synonyms>.
MLASmart Define. "formidable thesaurus" 17 July 2015. Web. 24 September 2026. <https://smartdefine.org/formidable/thesaurus/synonyms>