impregnableness
/ɪmˈprɛɡnəbəlnəs/
noun
- The quality of being impossible to capture, defeat, or overcome; invincibility.
- The fortress's impregnableness made it a legend among military strategists.
- Her argument had an impregnableness that left no room for doubt.
- The team's defense showed remarkable impregnableness throughout the tournament.
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