3
intimidating
3
irksome(adjective, painful)
3
irritating(adjective, painful)
3
mortal(adjective, awful, terrible, horrible, afraid)
3
nauseous
3
ominous
3
parlous(adjective, awful, terrible, horrible, afraid)
3
perishing(adjective, awful, terrible, horrible, afraid)
3
satanic
3
savage
3
scarey(adjective, awful, terrible, horrible, afraid)
3
scathing(adjective, awful, terrible, horrible, afraid)
3
severe(adjective, painful)
3
splitting(adjective, awful, terrible, horrible, afraid)
3
towering(adjective, awful, terrible, horrible, afraid)
3
tragical(adjective, awful, terrible, horrible, afraid)
3
unnerving
3
weird(adjective, bad, awful, disgusting, sinful)
3
woesome(adjective, awful, terrible, horrible, afraid)
2
abject
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>