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Impervious vs Impregnable - What's the difference?

impervious | impregnable |

As adjectives the difference between impervious and impregnable

is that impervious is unaffected or unable to be affected by while impregnable is too strong to be penetrated or impregnable can be capable of being impregnated.

impervious

English

Adjective

(en adjective)
  • Unaffected or unable to be affected by.
  • *
  • , title=(The Celebrity), chapter=5 , passage=Although the Celebrity was almost impervious to sarcasm, he was now beginning to exhibit visible signs of uneasiness, the consciousness dawning upon him that his eccentricity was not receiving the ovation it merited.}}
  • Preventive of any penetration; impenetrable, impermeable, particularly of water.
  • Immune to damage or effect.
  • Antonyms

    * pervious

    Derived terms

    * imperviously * imperviousness

    impregnable

    English

    Etymology 1

    From (etyl) imprenable, . Intrusive g added 16c on model of deign, reign.

    Adjective

    (en adjective)
  • Too strong to be penetrated.
  • * South
  • The man's affection remains wholly unconcerned and impregnable .
  • * {{quote-news
  • , year=2011 , date=October 2 , author=Jonathan Jurejko , title=Bolton 1 - 5 Chelsea , work=BBC Sport citation , page= , passage=And with Bolton suffering a wretched run of five straight home defeats - their worst run in 109 years - Chelsea fans would have been forgiven for expecting a comfortable win.
    But surely they did not anticipate the ease with which their team raced into an almost impregnable half-time lead.}}

    Etymology 2

    From .

    Adjective

    (en adjective)
  • Capable of being impregnated.
  • Following treatment, twenty percent of previously infertile females were impregnable .
    Application of the compound rendered the non-porous surface impregnable .

    References

    * Webster's Third New International Dictionary (1966).