56 entries under dangerous topic. ×
| poisonous | |
| terrible | |
| terrifying | |
| threatening | |
| toxic | |
| treacherous | |
| unsafe | |
| unstable | |
| venomous | |
| vulnerable | |
| wicked | |
| afflictive(adjective, severe, heavy, serious, acute) | |
| jeopardous | |
| killing(adjective, heavy, acute, major) | |
| ominous(adjective, heavy, acute, crucial) | |
| parlous |
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| APA | Smart Define. (2015). urgent thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/urgent/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "urgent thesaurus" https://smartdefine.org/urgent/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2015, urgent thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/urgent/thesaurus/synonyms>. |
| MLA | Smart Define. "urgent thesaurus" 3 August 2015. Web. 30 September 2026. <https://smartdefine.org/urgent/thesaurus/synonyms> |