impetuous

adj

1. Making arbitrary decisions, especially in an impulsive and forceful manner.

   “But it was natural, that the impetuous, restless young artist should incline more to excess of strength than of delicacy in his playing.”

   “The shrewd kind confidant used gently to hint the sad fact to the impetuous hero of this piece. The impetuous hero knew this quite well.”

   “The prime minister thought he could sagely steer his impetuous American friends away from actions they would later regret. It turns out they were just playing him for a patsy[.]”

   “How these developments might come about and what they will mean for humanity seems far more important to probe than Isaacson’s preferred focus on explaining Musk’s abusive, erratic, impetuous behavior.”

2. Characterized by sudden violence or vehemence.

   “For with ſuch puiſſance and impetuous maine / Thoſe Champions broke on them, that forſt the fly, / Like ſcattered Sheepe, whenas the Shepherds ſwaine / A Lyon and a Tigre doth eſpye, / With greedy pace forth ruſhing from the foreſt nye.”

   “[…]and the Thunder, / Wing'd with red Lightning and impetuous rage, / Perhaps hath ſpent his ſhafts […]”

   “He stands, and views in the faint rays Far, far below, the torrent's rising surge, And listens to the wild impetuous roar”

   “After being two days the prey of impetuous, varying emotions, Maria began to reflect more calmly on her present situation, for she had actually been rendered incapable of sober reflection, by the discovery of the act of atrocity of which she was the victim.”

   “"Oh! where, where is my uncle?" cried Elizabeth, darting from her seat as she finished the letter, in eagerness to follow him, with-out losing a moment of the time so precious; but as she reached the door, it was opened by a servant, and Mr. Darcy appeared. Her pale face and impetuous manner made him start […]”