/ɪmˈpʌlsɪvnəs/
冲动;鲁莽。指一个人在没有经过深思熟虑的情况下,凭一时冲动做出行动或决定的倾向或特质。
His impulsiveness led him to quit his job without having another one lined up.
他的冲动让他在没有找到下一份工作的情况下就辞了职。
While her impulsiveness sometimes got her into trouble, it also gave her the courage to seize opportunities that others would have let pass by.
虽然她的冲动有时会让她陷入麻烦,但也给了她抓住别人会错过的机会的勇气。
该词源自拉丁语 impulsus,意为"推动、冲击",由 **in-**(向内)和 pellere(驱动、推)构成。经由拉丁语进入英语后,先形成形容词 impulsive(冲动的),再加上名词后缀 -ness 构成 impulsiveness,表示"冲动的特质或状态"。该词自17世纪起在英语中广泛使用,常用于描述缺乏自制力的行为倾向。