- Definitions|2
- Thesaurus|756
- Abbreviations|0
| airtight(adjective, certain) | |
| impassable(adjective, strong, resolute, unaffected, unyielding) | |
| inexpugnable | |
| insusceptible(adjective, safe, unaffected, protected, resistant) | |
| powerful(adjective, invincible) | |
| proof(resistant, impervious) | |
| unsusceptible(adjective, safe, unaffected, protected, resistant) | |
| defended | |
| exempt(adjective, safe, unaffected, protected, resistant) | |
| guarded(adjective, secure, perfect, safe, snug) | |
| insuperable | |
| insurmountable | |
| monolithic | |
| resistant(adjective, strong, safe, unaffected, unyielding) | |
| safeguarded(adjective, secure, safe, snug, intact) | |
| sheltered(adjective, secure, safe, snug, intact) | |
| shielded(adjective, secure, perfect, safe, snug) | |
| sound | |
| steadfast | |
| unaffected(adjective, safe, unyielding, unbending, protected) |
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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> |