23
revolting(adjective, dull, nasty, unpleasant, awful)
22
frightening(adjective, awful, terrible, horrible, afraid)
22
offensive(adjective, dull, nasty, unpleasant, awful)
21
bad(adjective, dull, offensive, unpleasant, awful)
21
disgusting(adjective, dull, dislike, unpleasant, awful)
21
loathsome(adjective, dull, evil, nasty, unpleasant)
21
vile(adjective, dull, nasty, offensive, unpleasant)
20
repugnant(adjective, dull, nasty, awful, disgusting)
19
nauseating(adjective, dull, disgusting, ugly, endured)
18
fearful(adjective, good, great, pain, unpleasant)
17
disagreeable(adjective, dull, offensive, unpleasant, awful)
17
foul(adjective, dull, evil, nasty, awful)
17
repellent(adjective, dull, nasty, unpleasant, awful)
17
unpleasant(adjective, dull, offensive, awful, disgusting)
16
abhorrent(adjective, dull, unpleasant, awful, violent)
16
alarming(adjective, unpleasant, awful, terrible, foul)
16
macabre(adjective, nasty, awful, vile, vulgar)
16
sickening(adjective, dull, disgusting, ugly, endured)
16
terrifying(adjective, unpleasant, awful, terrible, disgusting)
15
heinous(adjective, evil, unpleasant, awful, violent)
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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>