When Sherman reached those earthworks, he thought them the most impregnable he had ever seen.
His place in the hearts of most Thai is central and impregnable.
She claimed he groped her crotch, pulling at her pantyhose, but the barrier was impregnable.
But it was really the uemployment data that turned out to be his impregnable fortress.
It is easy, therefore, to understand why the early Jebusites regarded their city as impregnable.
Some impregnable barrier of personality separated them as if it were a wall.
Resistance was cut short and Al-Qamus, the impregnable, was captured by the warriors of Islam.
Poor Janetta's heart was very tender, although her resolution was impregnable.
His position was impregnable to the dogs, but, thus perched, he was a splendid mark for E-tuk-i-shook.
It has not yet been placed on that basis which would make them impregnable.
early 15c., imprenable "impossible to capture," from Middle French imprenable "invulnerable," from assimilated form of in- "not, opposite of" (see in- (1)) + Old French prenable "assailable, vulnerable" (see pregnable). With intrusive -g- 16c., on model of deign, reign, etc. Related: Impregnability.