5
ungodly(adjective, offensive, unpleasant, awful, terrible)
5
unsettling(adjective, bad, awful, terrible, disgusting)
5
woeful(adjective, awful, terrible, horrible, painful)
4
awe-inspiring(adjective, terrible)
4
barbaric(adjective, terrible, vicious, shocking, brutal)
4
damnable(adjective, awful, terrible, horrible, afraid)
4
deplorable(adjective, endured)
4
disturbing(adjective, terrible)
4
enormous(adjective, awful, terrible, horrible, afraid)
4
ferocious(adjective, awful, terrible, horrible, afraid)
4
forbidding
4
great
4
grewsome(adjective, endured)
4
harsh(adjective, endured)
4
inhuman(adjective, awful, foul, disgusting, immoral)
4
iniquitous(terrible, shocking, shameful, atrocious, disgraceful)
4
insupportable(adjective, endured)
4
intense(adjective, endured)
4
intolerable(adjective, endured)
4
spooky(adjective, bad, awful, disgusting, sinful)
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>