315 entries under adjective topic. ×

7
noxious(awful, dirty, gloom, badly)
7
painful(endured, ugliness)
7
redoubtable(tough, difficult, awful, terrible)
7
unappetizing(dull, disgusting, ugly, bad-looking)
7
ungodly(unpleasant, awful, terrible, disgusting)
6
calamitous(offensive, unpleasant)
6
execrable(unpleasant, awful, terrible, disgusting)
6
insufferable(offensive, endured)
6
nightmarish
6
repellant(dull, disgusting, ugly, ugliness)
6
rotten
6
unprepossessing(dull, disgusting, ugly, revolting)
6
unsightly(appearance, dislike, disgusting, horrible)
5
Gorgonian(dull, disgusting, ugly, bad-looking)
5
acute
5
almighty(awful, terrible, horrible, afraid)
5
cringeworthy(terrible, dirty, badly, scary)
5
daunting
5
deformed(appearance, dislike, disgusting, horrible)
5
eerie(mean, nasty, unpleasant, awful)
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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>