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impregnable

im·preg·na·ble / imˈpreg-nəbəl/ • adj. (of a fortified position) unable to be captured or broken into: an impregnable wall of solid sandstone | fig. the companies are impregnable to takeovers. ∎  unable to be defeated or destroyed; unassailable: the case against Hastings would have been almost impregnable. DERIVATIVES: im·preg·na·bil·i·ty / -ˌpregnəˈbilitē/ n. im·preg·na·bly / -blē/ adv.

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"impregnable." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"impregnable." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/impregnable

"impregnable." The Oxford Pocket Dictionary of Current English. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/impregnable

impregnable

impregnable XV (imprenable). — (O)F. imprenable, f. IM-2 + prenable takeable, f. pren-, stem of prendre take :- L. prehendere; see -ABLE. The later forms impre(i)gnable, which depend upon OF. vars., induced the pronunc. with g.

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"impregnable." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"impregnable." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/impregnable-0

"impregnable." The Concise Oxford Dictionary of English Etymology. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/impregnable-0