315 entries under adjective topic. ×

9
creepy(awful, terrible, dirty, gloom)
9
extreme(great, severe, offensive, awful)
9
gross(nasty, awful, terrible, vile)
9
haggish(dull, appearance, dislike, disgusting)
9
objectionable(dull, terrible, dirty, disgusting)
9
obnoxious(appearance, nasty, dislike, unpleasant)
8
evil(awful, dirty, gloom, badly)
8
flagitious(awful, terrible, horrible, afraid)
8
grievous(awful, terrible, horrible, afraid)
8
hair-raising(awful, terrible, horrible, afraid)
8
unholy(dislike, unpleasant, awful, terrible)
7
abysmal(awful, terrible, horrible, afraid)
7
deadly(awful, terrible, horrible, afraid)
7
direful(awful, terrible, fear, horrible)
7
dreaded(awful, terrible, horrible, afraid)
7
enormous(awful, terrible, horrible, afraid)
7
ferocious(awful, violent, terrible, horrible)
7
forbidding(appearance, tough, difficult, terrible)
7
frumpy(dull, terrible, dirty, disgusting)
7
howling(awful, terrible, horrible, afraid)
10 years ago|22k views|share |citing 
APASmart Define. (2016). frightful thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/frightful/thesaurus/synonyms
ChicagoSmart Define. 2016. "frightful thesaurus" https://smartdefine.org/frightful/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, frightful thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/frightful/thesaurus/synonyms>.
MLASmart Define. "frightful thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/frightful/thesaurus/synonyms>