impregnable
adjective
strong enough to resist or withstand attack; not to be taken by force, unconquerable.
impregnableness
-
a word derived from
impregnable.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
But with this general understanding we should feel bound to concede the impregnableness of his main position.
From The Unseen World and Other Essays by John Fiske
