Is Impregnable a French Word?

Impregnable is one of the many English words that bear a French ancestry. It derives from the Middle French verb prendre, which means "to take or capture." Combining prendre with various prefixes has given our language many other words, too, including surprise, reprise and enterprise.

What does impregnable fortress mean?

Impossible to capture or enter by force: an impregnable fortress.

What is an impenetrable person?

1a : incapable of being penetrated or pierced. b : inaccessible to knowledge, reason, or sympathy : impervious. 2 : incapable of being comprehended : inscrutable.