9
morbid(adjective, awful, terrible, horrible, afraid)
9
painful(adjective, painful, endured)
9
repellent(adjective, nasty, offensive, unpleasant, awful)
9
rotten(adjective, endured)
9
terrific
9
unholy(adjective, bad, unpleasant, awful, terrible)
8
alarming
8
desperate(adjective, awful, terrible, horrible, afraid)
8
execrable(adjective, unpleasant, awful, terrible, disgusting)
8
ghoulish(adjective, awful, terrible, grim, shocking)
8
nightmarish(adjective, terrible, endured, frightening, nightmare)
8
tragic(adjective, awful, terrible, horrible, afraid)
7
abysmal(adjective, awful, terrible, horrible, afraid)
7
eerie(adjective, bad, unpleasant, awful, terrible)
7
gross(adjective, awful, terrible, horrible, afraid)
7
hellish(adjective, awful, terrible, horrible, afraid)
7
miserable(adjective, awful, terrible, horrible, painful)
7
piercing(adjective, painful, endured)
7
spine-chilling(adjective, bad, awful, terrible, disgusting)
7
tormenting(adjective, painful, endured)
11 years ago|10k views|share |citing 
APASmart Define. (2015). horrendous thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/horrendous/thesaurus/synonyms
ChicagoSmart Define. 2015. "horrendous thesaurus" https://smartdefine.org/horrendous/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, horrendous thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/horrendous/thesaurus/synonyms>.
MLASmart Define. "horrendous thesaurus" 17 July 2015. Web. 25 September 2026. <https://smartdefine.org/horrendous/thesaurus/synonyms>