- Definitions|2
- Thesaurus|756
- Abbreviations|0
| mighty | |
| nonperishable | |
| okay(adjective, secure, safe, snug, intact) | |
| out of danger(expression, idiom, secure, safe, snug) | |
| overpowering | |
| overwhelming | |
| patented | |
| policed | |
| preserved(adjective, secure, perfect, safe, snug) | |
| proof against(verb, expression, phrasal verb, safety) | |
| quenchless | |
| reliable | |
| resistive(adjective, resistant) | |
| resistless | |
| rigid(adjective, unyielding, unbending, unreceptive) | |
| riskless | |
| sacred(adjective, protected) | |
| safe and sound(expression, idiom, secure, safe, snug) | |
| screened | |
| shellproof |
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| APA | Smart Define. (2015). invulnerable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/invulnerable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "invulnerable thesaurus" https://smartdefine.org/invulnerable/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, invulnerable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/invulnerable/thesaurus/synonyms>. |
| MLA | Smart Define. "invulnerable thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/invulnerable/thesaurus/synonyms> |