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, unassailable
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). unattackable. Retrieved September 20, 2026, from http://smartdefine.org/unattackable/definitions/1186108 |
| Chicago | WordNet. 2010. "unattackable" http://smartdefine.org/unattackable/definitions/1186108 (accessed September 20, 2026). |
| Harvard | WordNet 2010, unattackable, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/unattackable/definitions/1186108>. |
| MLA | WordNet. "unattackable" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/unattackable/definitions/1186108> |