impregnable

Their 416 in the first innings was a good total, though their wastefulness prevented it from being impregnable.

In these moments, Amewudah-Rivers — who is making her West End debut — displays an impregnable abstractedness that rings true to the stubborn determination of adolescence.

But most of that was the result of the club being impregnable on the defensive side of the ball.

He expects the layers of security will be so dense that Olympic sites will be practically impregnable.

He’s heir to Trump’s sybaritic nihilism, high-kitsch absurdity and impregnable brazenness.