62 entries under dreadful topic. ×

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)
18
fearful(adjective, good, great, pain, unpleasant)
17
disagreeable(adjective, dull, offensive, unpleasant, awful)
17
repellent(adjective, dull, nasty, unpleasant, awful)
17
unpleasant(adjective, dull, offensive, awful, disgusting)
16
abhorrent(adjective, dull, unpleasant, awful, violent)
16
terrifying(adjective, unpleasant, awful, terrible, disgusting)
15
heinous(adjective, evil, unpleasant, awful, violent)
15
unspeakable(adjective, mean, bad, unpleasant, awful)
14
beastly(adjective, nasty, unpleasant, awful, violent)
14
grim(adjective, appearance, pain, unpleasant, awful)
11
lurid(adjective, evil, unpleasant, awful, terrible)
10
cruel(adjective, appearance, evil, unpleasant, awful)
9
obnoxious(adjective, appearance, nasty, dislike, unpleasant)
8
unholy(adjective, dislike, unpleasant, awful, terrible)
7
redoubtable(adjective, tough, difficult, awful, terrible)
7
ungodly(adjective, unpleasant, awful, terrible, disgusting)
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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>