Synonyms|832Antonyms|191|Broader|14Narrower|25Related|1.1k
5
nocuous(adjective, cruel, unkind, distressing, harmful)
5
perishing(adjective, awful, terrible, strange, horrible)
5
scathing(adjective, awful, terrible, strange, horrible)
5
terrible(adjective, dangerous)
5
terrifying(adjective, awful, terrible, horrible, afraid)
5
unhealthy(adjective, bad, offensive, heavy, foul)
5
unwholesome(adjective, offensive, foul, disgusting, unhealthy)
5
wicked(adjective, awful, terrible, horrible, afraid)
4
barbarous
4
brutal
4
cataclysmic(adjective, sad, awful, painful, suffering)
4
cutthroat(noun, adjective, unpleasant, grim, savage)
4
death-dealing
4
dread(adjective, awful, terrible, horrible, afraid)
4
exact
4
execrable(adjective, awful, terrible, horrible, afraid)
4
fateful
4
feral
4
frightening(adjective, awful, terrible, horrible, afraid)
4
frightfully
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ChicagoSmart Define. 2016. "deadly thesaurus" https://smartdefine.org/deadly/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, deadly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/deadly/thesaurus/synonyms>.
MLASmart Define. "deadly thesaurus" 26 March 2016. Web. 22 September 2026. <https://smartdefine.org/deadly/thesaurus/synonyms>