145 entries under terrible topic. ×

11
hair-raising(adjective, bad, awful, disgusting)
11
sickening(adjective, awful, vicious, grim)
11
wicked(adjective, bad, awful, disgusting)
11
obnoxious(adjective, severe, nasty, offensive, unpleasant)
11
vicious(adjective, awful, horrible, afraid)
10
nauseating(adjective, awful, disgusting, grim)
10
grim(adjective, bad, nasty, offensive, unpleasant)
10
grievous(adjective, awful, horrible, painful)
10
tremendous(adjective, awful, horrible, afraid)
10
unbearable(adjective, offensive, unpleasant, awful)
10
wretched(adjective, awful, horrible, afraid)
9
extreme(adjective, severe, awful, serious)
9
morbid(adjective, awful, horrible, afraid)
9
repellent(adjective, nasty, offensive, unpleasant, awful)
9
unholy(adjective, bad, unpleasant, awful)
8
desperate(adjective, awful, horrible, afraid)
8
execrable(adjective, unpleasant, awful, disgusting)
8
ghoulish(adjective, awful, grim, shocking)
8
nightmarish(adjective, endured, frightening, nightmare)
8
tragic(adjective, awful, horrible, afraid)
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APASmart Define. (2015). horrendous thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/horrendous/thesaurus/synonyms
ChicagoSmart Define. 2015. "horrendous thesaurus" https://smartdefine.org/horrendous/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, horrendous thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/horrendous/thesaurus/synonyms>.
MLASmart Define. "horrendous thesaurus" 17 July 2015. Web. 29 September 2026. <https://smartdefine.org/horrendous/thesaurus/synonyms>