Sentence examples for Almost impregnable from inspiring English sources

These defenses made San Juan almost impregnable.

Encryption keys selected at random and of sufficient length are considered almost impregnable.

Rex makes himself almost impregnable, hardly ever answering letters or the telephone".

More confounding, the Taliban and their Qaeda allies have found in northwestern Pakistan a refuge that has proved almost impregnable.

The works shown in the photograph were constructed near the village of Centreville, and, by the topography of the surrounding country, were rendered almost impregnable to assault.

The joy of witnessing England take an almost impregnable  2-0 lead in this summer's Ashes has not been lost on the British public.

He and his sons began to build a power base, which would become feared and virtually impregnable for almost a century.

The French position, in the chain of abrupt and woody heights, seemed nearly impregnable.

Bacteria that possess multiple RM systems are thought to be virtually impregnable.

Heseltine's achievements have been matched by conspicuous failures, but his self belief is almost thrillingly impregnable, making him quite impervious to any such impression.

The North-South bidding was aggressive, but since the lie of the club suit is favorable, the four-spade contract was almost though not quite impregnable.