- Definitions|1
- Thesaurus|497
- Abbreviations|0
12 entries under sound topic. ×
| secure(adjective, good, sensible, safe) | |
| strong(adjective, secure, resolute, safe) | |
| invulnerable(adjective, strong, secure, resolute) | |
| safe(adjective, clear, secure, harm) | |
| firm(adjective, clear, hard, plain) | |
| fixed(adjective, clear, hard, firm) | |
| set(adjective, clear, plain, certain) | |
| impervious(adjective, secure, firm, safe) | |
| fast(adjective, firm, safe, sheltered) | |
| fastened(adjective, firm, safe, sheltered) | |
| locked(adjective, firm, safe, sheltered) | |
| nailed(adjective, firm, safe, sheltered) |
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| APA | Smart Define. (2015). unassailable thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unassailable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unassailable thesaurus" https://smartdefine.org/unassailable/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, unassailable thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unassailable/thesaurus/synonyms>. |
| MLA | Smart Define. "unassailable thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/unassailable/thesaurus/synonyms> |