3
uncanny(adjective, bad, awful, disgusting, sinful)
3
unlucky(adjective, black, baleful, bodeful)
3
unsafe(adjective, insecure, risky, dangerous)
3
weird(adjective, bad, awful, disgusting, sinful)
2
abominable
2
awed
2
chilling
2
cowardly
2
distressing(adjective, alarming)
2
evil(adjective, black, baleful, bodeful)
2
foul
2
ghostly
2
massive(adjective, alarming)
2
nervous(awful, wonderful, amazing, grand, splendid)
2
shaky(insecure, risky, dangerous)
2
spooky
2
startling
2
stupefying(adjective, awful, wonderful, amazing, grand)
2
terrific
2
threatening(untrustworthy, insecure, risky, dangerous)
11 years ago|5.2k views|share |citing 
APASmart Define. (2015). fearsome thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/fearsome/thesaurus/synonyms
ChicagoSmart Define. 2015. "fearsome thesaurus" https://smartdefine.org/fearsome/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, fearsome thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/fearsome/thesaurus/synonyms>.
MLASmart Define. "fearsome thesaurus" 17 July 2015. Web. 24 September 2026. <https://smartdefine.org/fearsome/thesaurus/synonyms>