- Definitions|2
- Thesaurus|2.1k
- Abbreviations|0
68 entries under harmful topic. ×
| fatal(adjective, bad, evil, painful, suffering) | |
| lethal(adjective, bad, evil, live) | |
| mortal(adjective, dull, awful, terrible, horrible) | |
| pernicious(adjective, help, bad, evil, cruel) | |
| toxic(adjective, bad, evil, unhealthy) | |
| noxious(adjective, help, bad, evil, cruel) | |
| baneful(adjective, help, bad, evil, distressing) | |
| suicidal(adjective, destruction, killing, injurious) | |
| poisonous(adjective, bad, offensive, foul, disgusting) | |
| venomous(adjective, bad, evil, hateful) | |
| pestilent(adjective, help, unhealthy, dangerous) | |
| deleterious(adjective, bad, evil, cruel, unkind) | |
| baleful(adjective, bad, evil, injurious) | |
| noisome(adjective, bad, evil, offensive, immoral) | |
| dangerous(adjective, bad, heavy, foul) | |
| injurious(adjective, cruel, unkind, distressing, adverse) | |
| detrimental(adjective, bad, evil, cruel, unkind) | |
| devastating(adjective, bad, evil, destruction, grim) | |
| disastrous(adjective, sad, painful, suffering, dreadful) | |
| ruinous(adjective, bad, destruction, painful, suffering) |
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| APA | Smart Define. (2016). deadly thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/deadly/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "deadly thesaurus" https://smartdefine.org/deadly/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, deadly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/deadly/thesaurus/synonyms>. |
| MLA | Smart Define. "deadly thesaurus" 26 March 2016. Web. 22 September 2026. <https://smartdefine.org/deadly/thesaurus/synonyms> |