impregna'bility

World English Dictionary

impregnable¹ (ɪmˈprɛɡnəb^əl)

—*adj*
1.	unable to be broken into or taken by force: an impregnable castle
2.	unable to be shaken or overcome: impregnable self-confidence
3.	incapable of being refuted: an impregnable argument

[C15 imprenable, from Old French, from im- (not) + prenable able to be taken, from prendre to take]

impregna'bility¹

—n

im'pregnableness¹

—n

im'pregnably¹

—*adv*

Collins English Dictionary - Complete & Unabridged 10th Edition
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