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Impregnable vs Impetuous - What's the difference?

impregnable | impetuous |

As adjectives the difference between impregnable and impetuous

is that impregnable is too strong to be penetrated while impetuous is making arbitrary decisions, especially in an impulsive and forceful manner.

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).

    impetuous

    English

    Adjective

    (en adjective)
  • Making arbitrary decisions, especially in an impulsive and forceful manner.
  • * 1880 , John Weeks Moore, Complete Encyclopaedia of Music , "":
  • But it was natural, that the impetuous , restless young artist should incline more to excess of strength than of delicacy in his playing.
  • Characterized by sudden and violent force.
  • * 1794 , :
  • He stands, and views in the faint rays
    Far, far below, the torrent's rising surge,
    And listens to the wild impetuous roar

    Synonyms

    * impulsive * hasty * rash * hotheaded