37 entries under lethal topic. ×

9
deathly(adjective, live, dangerous, deadly)
9
inevitable(adjective, important, critical, deadly, doomed)
7
dire(adjective, sad, heavy, painful, suffering)
7
killing(adjective, death, deadly)
7
pestilent(adjective, dangerous, deadly)
6
incurable(adjective, pessimistic, deadly, final, desperate)
6
injurious(adjective, bad, evil, wicked, harmful)
5
deleterious(adjective, bad, evil, harmful, injurious)
5
final(adjective, important, critical, deadly)
5
internecine(adjective, violent, cruel, harmful, killing)
5
pestilential(adjective, bad, evil, harmful, injurious)
5
venomous(adjective, bad, evil, harmful, dangerous)
3
ill-fated(adjective, deadly)
3
ill-starred(adjective, deadly)
2
malefic(adjective, deadly)
1
mortiferous(adjective, killing, deadly)
1
pestiferous(adjective, bad, evil, harmful, injurious)
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APASmart Define. (2016). fatal thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/fatal/thesaurus/synonyms
ChicagoSmart Define. 2016. "fatal thesaurus" https://smartdefine.org/fatal/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, fatal thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/fatal/thesaurus/synonyms>.
MLASmart Define. "fatal thesaurus" 3 April 2016. Web. 20 September 2026. <https://smartdefine.org/fatal/thesaurus/synonyms>