Definitions for impregnable
Overview of adj impregnable
The adj impregnable has 3 senses? (first 1 from tagged texts)
1. (1) impregnable, inviolable, secure, strong, unassailable, unattackable
(immune to attack; incapable of being tampered with; "an impregnable fortress"; "fortifications that made the frontier inviolable"; "a secure telephone connection")
2. conceptive, impregnable
(capable of conceiving)
3. impregnable, inexpugnable
(incapable of being overcome, challenged or refuted; "an impregnable argument"; "impregnable self-confidence")
