181 entries under adjective topic. ×
| ill-fated(deadly, lethal) | |
| ill-starred(deadly, lethal) | |
| life-threatening | |
| ominous | |
| savage | |
| terrible | |
| unhappy | |
| unhealthy | |
| unwholesome | |
| achromatic | |
| brutal | |
| cancerous(harmful, injurious, damaging, deadly) | |
| consumptive(harmful, injurious, damaging, deadly) | |
| contraband | |
| crucial(important, critical) | |
| desperate | |
| disgraceful | |
| formidable | |
| grim | |
| hazardous |
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| APA | Smart Define. (2016). fatal thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/fatal/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fatal thesaurus" https://smartdefine.org/fatal/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, fatal thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/fatal/thesaurus/synonyms>. |
| MLA | Smart Define. "fatal thesaurus" 3 April 2016. Web. 24 September 2026. <https://smartdefine.org/fatal/thesaurus/synonyms> |