- Definitions|1
- Thesaurus|113
- Abbreviations|0
| dangerous | |
| serious(adjective, dangerous) | |
| severe(adjective, dangerous) | |
| acute(adjective, dangerous) | |
| critical(adjective, dangerous) | |
| deadly(adjective, dangerous) | |
| grave(adjective, dangerous) | |
| grievous | |
| hazardous(adjective, dangerous) | |
| lethal(adjective, dangerous) | |
| fatal(adjective, dangerous) | |
| perilous(adjective, dangerous) | |
| harmful(adjective, dangerous) | |
| mortal(adjective, dangerous) | |
| poisonous(adjective, dangerous) | |
| toxic(adjective, dangerous) | |
| capital(adjective, dangerous) | |
| desperate | |
| dire | |
| malignant(adjective, dangerous) |
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| APA | Smart Define. (2015). life-threatening thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/life-threatening/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "life-threatening thesaurus" https://smartdefine.org/life-threatening/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, life-threatening thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/life-threatening/thesaurus/synonyms>. |
| MLA | Smart Define. "life-threatening thesaurus" 17 July 2015. Web. 21 September 2026. <https://smartdefine.org/life-threatening/thesaurus/synonyms> |