(1)the trait of acting rashly and without prudence
(2)軽率に、用心しないで行動する特性
(3)the quality of not being careful or taking pains
(4)慎重でない人柄、または犠牲に耐えない人柄
(5)a reckless impetuous irresponsible person
(6)向こう見ずで衝動的で無責任な人