- Definitions|2
- Thesaurus|1k
- Abbreviations|0
| intimidating | |
| irksome(adjective, painful) | |
| irritating(adjective, painful) | |
| mortal(adjective, awful, terrible, horrible, afraid) | |
| nauseous | |
| ominous | |
| parlous(adjective, awful, terrible, horrible, afraid) | |
| perishing(adjective, awful, terrible, horrible, afraid) | |
| satanic | |
| savage | |
| scarey(adjective, awful, terrible, horrible, afraid) | |
| scathing(adjective, awful, terrible, horrible, afraid) | |
| severe(adjective, painful) | |
| splitting(adjective, awful, terrible, horrible, afraid) | |
| towering(adjective, awful, terrible, horrible, afraid) | |
| tragical(adjective, awful, terrible, horrible, afraid) | |
| unnerving | |
| weird(adjective, bad, awful, disgusting, sinful) | |
| woesome(adjective, awful, terrible, horrible, afraid) | |
| abject |
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| APA | Smart Define. (2015). horrendous thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/horrendous/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "horrendous thesaurus" https://smartdefine.org/horrendous/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, horrendous thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/horrendous/thesaurus/synonyms>. |
| MLA | Smart Define. "horrendous thesaurus" 17 July 2015. Web. 25 September 2026. <https://smartdefine.org/horrendous/thesaurus/synonyms> |