62 entries under dreadful topic. ×

6
execrable(adjective, unpleasant, awful, terrible, disgusting)
5
eerie(adjective, mean, nasty, unpleasant, awful)
5
lousy(adjective, nasty, unpleasant, awful, violent)
4
unbearable(adjective, unpleasant, awful, terrible, disgusting)
3
baleful(adjective, awful, terrible)
3
bloodcurdling(nasty, unpleasant, awful, terrible, unkind)
3
detestable(adjective, nasty, unpleasant, awful, disgusting)
3
disquieting(great, huge, astonishing, massive)
3
ghoulish(adjective, awful, terrible, grim, shocking)
3
shameful(adjective, dislike, unpleasant, awful, disgusting)
3
sinister(adjective, appearance, awful, terrible)
2
distressing(adjective, unpleasant, awful, terrible, disgusting)
1
mean(adjective, nasty, unpleasant, awful, violent)
1
scandalous(adjective, evil, nasty, unpleasant, awful)
1
unearthly(awful, terrible, shocking, upsetting)
0
fairy(adjective, nasty, unpleasant, awful, disgusting)
0
shuddersome(awful, terrible, horrible, terrific)
0
sickie(adjective, nasty, unpleasant, awful, disgusting)
0
strange(awful, terrible)
0
sublime(awful, terrible)
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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>