5
eerie(adjective, mean, nasty, unpleasant, awful)
5
excruciating(adjective, endured)
5
frumpish(adjective, dull, disgusting, ugly, bad-looking)
5
great(adjective, tough, difficult, offensive, unpleasant)
5
hellish(adjective, awful, terrible, horrible, afraid)
5
ill-favored(adjective, appearance, dislike, terrible, dirty)
5
intimidating
5
lewd(adjective, offensive, vile)
5
lousy(adjective, nasty, unpleasant, awful, violent)
5
miserable(adjective, awful, terrible, horrible, afraid)
5
misshapen(adjective, appearance, dislike, disgusting, horrible)
5
spine-chilling(adjective, awful, terrible, horrible, afraid)
5
unappealing(adjective, dull, disgusting, ugly, bad-looking)
5
unbecoming(adjective, dull, disgusting, ugly, bad-looking)
5
unimposing(adjective, dull, disgusting, ugly, bad-looking)
5
unlovely(adjective, appearance, dislike, disgusting, ugly)
5
unshapely(adjective, dull, disgusting, ugly, bad-looking)
5
very bad(adjective, awful, terrible, horrible, afraid)
5
witchy(adjective, dull, disgusting, ugly, bad-looking)
5
wrong(adjective, offensive, vile)
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APASmart Define. (2016). frightful thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/frightful/thesaurus/synonyms
ChicagoSmart Define. 2016. "frightful thesaurus" https://smartdefine.org/frightful/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, frightful thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/frightful/thesaurus/synonyms>.
MLASmart Define. "frightful thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/frightful/thesaurus/synonyms>