- Definitions|2
- Thesaurus|534
- Abbreviations|0
| uncanny(adjective, bad, awful, disgusting, sinful) | |
| unlucky(adjective, black, baleful, bodeful) | |
| unsafe(adjective, insecure, risky, dangerous) | |
| weird(adjective, bad, awful, disgusting, sinful) | |
| abominable | |
| awed | |
| chilling | |
| cowardly | |
| distressing(adjective, alarming) | |
| evil(adjective, black, baleful, bodeful) | |
| foul | |
| ghostly | |
| massive(adjective, alarming) | |
| nervous(awful, wonderful, amazing, grand, splendid) | |
| shaky(insecure, risky, dangerous) | |
| spooky | |
| startling | |
| stupefying(adjective, awful, wonderful, amazing, grand) | |
| terrific | |
| threatening(untrustworthy, insecure, risky, dangerous) |
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| APA | Smart Define. (2015). fearsome thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/fearsome/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "fearsome thesaurus" https://smartdefine.org/fearsome/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, fearsome thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/fearsome/thesaurus/synonyms>. |
| MLA | Smart Define. "fearsome thesaurus" 17 July 2015. Web. 24 September 2026. <https://smartdefine.org/fearsome/thesaurus/synonyms> |