Sentence examples similar to impregnable stance from inspiring English sources

But they have also benefited from an impregnable competitive position.

But Kidder's conclusion after his time with Farmer is not quite what Farmer predicted: "It still seemed to me that he took a stance all too conveniently impregnable.... Any criticism of him amounted to an assault on the already downtrodden people he served.

"The position was practically impregnable from the river".

An impregnable assertion.

Is that defence impregnable?

The enigma seems impregnable.

"Bell Canada is impregnable".

To many, Google appears impregnable.

The Confederate entrenchment was impregnable.

The death penalty seemed impregnable.

"Impregnable" was an autoantonym, too.