| uncertain(adjective, clear, sure, insecure, irresponsible) | |
| unhealthy | |
| venturesome | |
| harmful(adjective, good, insecure, harmless, irresponsible) | |
| unprotected(adjective, secure, insecure, irresponsible) | |
| precarious(adjective, strong, stable) | |
| chancy(adjective, risky, dangerous) | |
| hurt | |
| incautious(adjective, insecure, irresponsible) | |
| insecure(adjective, strong, steady, dangerous, irresponsible) | |
| poisonous(adjective, insecure, irresponsible) | |
| reckless | |
| unreliable(adjective, insecure, irresponsible) | |
| unsound(adjective, strong, sound, well, flimsy) | |
| adventurous | |
| deadly | |
| deleterious | |
| dicey(adjective, risky) | |
| dodgy | |
| endangered |
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| APA | Smart Define. (2016). safe thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/safe/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "safe thesaurus" https://smartdefine.org/safe/thesaurus/antonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, safe thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/safe/thesaurus/antonyms>. |
| MLA | Smart Define. "safe thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/safe/thesaurus/antonyms> |