adjective
- Immune to attack; incapable of being tampered with.
- usage: "an impregnable fortress"; "fortifications that made the frontier inviolable"; "a secure telephone connection"
- synonyms: impregnable, inviolable, secure, strong, unattackable
- Impossible to assail.
- synonyms: untouchable
- Without flaws or loopholes.
- usage: "an ironclad contract"; "a watertight alibi"; "a bulletproof argument"
- synonyms: unshakable, watertight, bulletproof
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). unassailable. Retrieved September 21, 2026, from http://smartdefine.org/unassailable/definitions/1186099 |
| Chicago | WordNet. 2010. "unassailable" http://smartdefine.org/unassailable/definitions/1186099 (accessed September 21, 2026). |
| Harvard | WordNet 2010, unassailable, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/unassailable/definitions/1186099>. |
| MLA | WordNet. "unassailable" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/unassailable/definitions/1186099> |