adjective \im-ˈpech-wəs; -ˈpe-chə-, -chü-əs\

: acting or done quickly and without thought : controlled by emotion rather than thought

Full Definition of IMPETUOUS

:  marked by impulsive vehemence or passion <an impetuous temperament>
:  marked by force and violence of movement or action <an impetuous wind>
im·pet·u·ous·ly adverb
im·pet·u·ous·ness noun

Examples of IMPETUOUS

  1. He's always been an impetuous young man.
  2. In one episode of The Sopranos, … the young, impetuous mobster Christopher Moltisanti … tries to write a screenplay in the hours when he is not robbing trucks or picking up cannolis for Tony. —David Remnick, New Yorker, 2 Apr. 2001


Middle English, from Anglo-French, from Late Latin impetuosus, from Latin impetus (see impetus)
First Known Use: 14th century


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