What does impregnable mean?

Definitions for impregnable
ɪmˈprɛg nə bəlim·preg·nable

This dictionary definitions page includes all the possible meanings, example usage and translations of the word impregnable.

Princeton's WordNet

  1. impregnable, inviolable, secure, strong, unassailable, unattackableadjective

    immune to attack; incapable of being tampered with

    "an impregnable fortress"; "fortifications that made the frontier inviolable"; "a secure telephone connection"

  2. conceptive, impregnableadjective

    capable of conceiving

  3. impregnable, inexpugnableadjective

    incapable of being overcome, challenged or refuted

    "an impregnable argument"; "impregnable self-confidence"


  1. impregnableadjective

    (Of a fortress, wall, etc., also used figuratively) Too strong to be penetrated.

Samuel Johnson's Dictionary

  1. IMPREGNABLEadjective

    Etymology: imprenable, French.

    Two giants kept themselves in a castle, seated upon the top of a rock, impregnable, because there was no coming to it but by one narrow path, where one man's force was able to keep down an army. Philip Sidney.

    Let us be back'd with God, and with the seas,
    Which he hath given for fence impregnable,
    And with their helps alone defend ourselves. William Shakespeare, H. VI.

    Hast thou not him, and all
    Which he calls his, inclosed with a wall
    Of strength impregnable? George Sandys.

    There the capitol thou see'st,
    Above the rest lifting his stately head
    On the Tarpeian rock, her citadel
    Impregnable. John Milton, Paradise Regain'd, b. iv.

    The man's affection remains wholly unconcerned and impregnable; just like a rock, which, being plied continually by the waves, still throws them back again, but is not at all moved. Robert South, Sermons.


  1. impregnable

    Two ships and two establishments of the Royal Navy have been named HMS Impregnable:


  1. impregnable

    Impregnable refers to something, often a place or structure, that is capable of resisting capture, attack, or defeat due to its strong or invincible nature. It can also refer to an argument or theory that's impossible to refute or disprove due to its solid basis or logic.

Webster Dictionary

  1. Impregnableadjective

    not to be stormed, or taken by assault; incapable of being subdued; able to resist attack; unconquerable; as, an impregnable fortress; impregnable virtue

  2. Impregnableadjective

    capable of being impregnated, as the egg of an animal, or the ovule of a plant

  3. Etymology: [See Impregnate.]

Chambers 20th Century Dictionary

  1. Impregnable

    im-preg′na-bl, adj. that cannot be seized: that cannot be moved.—n. Impregnabil′ity.—adv. Impreg′nably. [Fr. imprenable—L. in, not, prendĕre, prehendĕre, to take.]

Dictionary of Nautical Terms

  1. impregnable

    Said of a fortress or position supposed to be proof against any attack.

Military Dictionary and Gazetteer

  1. impregnable

    Not to be stormed, or taken by assault; incapable of being reduced by force; able successfully to resist attack; as, an impregnable fortress.

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How to say impregnable in sign language?


  1. Chaldean Numerology

    The numerical value of impregnable in Chaldean Numerology is: 3

  2. Pythagorean Numerology

    The numerical value of impregnable in Pythagorean Numerology is: 3

Examples of impregnable in a Sentence

  1. Hugo Black:

    The First Amendment has erected a wall between church and state. That wall must be kept high and impregnable. We could not approve the slightest breach.

  2. Henrik Ibsen:

    Ah, I fancy it is just the same with most of what you call your emancipation. You have read yourself into a number of new ideas and opinions. You have got a sort of smattering of recent discoveries in various fields -- discoveries that seem to overthrow certain principles which have hitherto been held impregnable and unassailable. But all this has only been a matter of intellect, Miss West -- superficial acquisition. It has not passed into your blood.

  3. Zelda:

    Most people hew the battlements of life from compromise, erecting their impregnable keeps from judicious submissions, fabricating their philosophical drawbridges from emotional retractions and scalding marauders in the boiling oil of sour grapes.

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Translations for impregnable

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"impregnable." Definitions.net. STANDS4 LLC, 2023. Web. 11 Dec. 2023. <https://www.definitions.net/definition/impregnable>.

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    be contingent upon (something that is elided)
    • A. disturb
    • B. restore
    • C. obligate
    • D. depend

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