characterized by undue haste and lack of thought or deliberation; "a hotheaded decision"; "liable to such impulsive acts as hugging strangers"; "an impetuous display of spending and gambling"; "madcap escapades"; (`brainish' is archaic)
過度の急性と思案または熟考の不足によって特徴づけられる
impetuous
marked by violent force; "impetuous heaving waves"
(Sound)
