| threatened(verb, adjective, rare) | |
| at risk(expression, adjective, idiom, rare, susceptible) | |
| risky(adjective, dangerous, hazardous, dodgy) | |
| jeopardized | |
| endanger | |
| vulnerable(adjective, susceptible, insecure, exposed, helpless) | |
| imperiled | |
| dangerous(adjective, delicate, uncertain, unsound, vulnerable) | |
| concerned | |
| unprotected(adjective, vulnerable, insecure, danger, exposed) | |
| risked | |
| hazardous(adjective, delicate, uncertain, unsound, vulnerable) | |
| compromised | |
| defenseless(adjective, vulnerable, insecure, exposed, powerless) | |
| exposed(verb, adjective, vulnerable, insecure, helpless) | |
| implicated | |
| susceptible | |
| menaced | |
| adventured | |
| dared |
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| APA | Smart Define. (2015). endangered thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/endangered/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "endangered thesaurus" https://smartdefine.org/endangered/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, endangered thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/endangered/thesaurus/synonyms>. |
| MLA | Smart Define. "endangered thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/endangered/thesaurus/synonyms> |