7
cruel(adjective, awful, terrible, horrible, afraid)
7
damaging(adjective, bad, evil, cruel, unkind)
7
deathlike(adjective, boring, tedious, live, gaunt)
7
fearful(adjective, awful, terrible, strange, horrible)
7
frightful(adjective, awful, terrible, horrible, afraid)
7
gruesome(adjective, awful, terrible, horrible, afraid)
7
parlous(adjective, awful, terrible, strange, horrible)
7
woeful(adjective, awful, terrible, strange, horrible)
6
hurtful(adjective, bad, evil, cruel, unkind)
6
self-destructive
6
terminal
6
dead(adjective, quiet, dry, boring, tedious)
6
dire(adjective, awful, terrible, horrible, painful)
6
grisly(adjective, awful, terrible, horrible, afraid)
6
internecine(adjective, harmful, killing, injurious, damaging)
6
morbid(adjective, nasty, awful, terrible, gloomy)
6
nasty(adjective, awful, terrible, horrible, afraid)
6
sanguinary(adjective, murderous)
6
tiresome(adjective, dull, dry, boring, tedious)
5
bad(adjective, awful, terrible, horrible, afraid)
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APASmart Define. (2016). deadly thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/deadly/thesaurus/synonyms
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>