315 entries under adjective topic. ×

3
unacceptable
3
unattractive(nasty, plain, awful, ugly)
3
unendurable
3
unsavory(terrible, dirty, badly, scary)
3
unsettling(awful, terrible, horrible, afraid)
3
unsupportable
3
woesome(awful, terrible, horrible, afraid)
3
yucky(awful, dirty, gloom, badly)
2
adverse(awful, dirty, gloom, badly)
2
brutal(violent, terrible, wild, cruel)
2
cowardly
2
distressing(unpleasant, awful, terrible, disgusting)
2
ghostly(shocking, upsetting, frightening)
2
gory
2
messy(terrible, dirty, badly, scary)
2
petrifying
2
repelling(nasty, plain, awful, revolting)
2
savage(violent, wild, cruel, vicious)
2
surly
2
unnerving
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APASmart Define. (2016). frightful thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/frightful/thesaurus/synonyms
ChicagoSmart Define. 2016. "frightful thesaurus" https://smartdefine.org/frightful/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, frightful thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/frightful/thesaurus/synonyms>.
MLASmart Define. "frightful thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/frightful/thesaurus/synonyms>