impetuous

形容词 impetuous:

1. characterized by undue haste and lack of thought or deliberation; (`brainish' is archaic)
   同义词：hotheaded, impulsive, madcap, tearaway, brainish
2. marked by violent force

1. She regretted her impetuous decision.
   她後悔自己做了冲动的决定。
2. Mr Smith has to justify a "waiting game" to his more impetuous followers.
   史密斯先生不得不向其较为冲动的追随者证明“观望政策”是正确的。
3. It would be foolish and impetuous to resign over such a trivial matter.
   为这样的小事辞职未免愚蠢而轻率。
4. He is an impetuous young man.
   他是个易冲动的年轻人。

im.pet.u.ous

adj.（形容词）
Characterized by sudden and forceful energy or emotion; impulsive and passionate.
冲动的：具有突然的和强有力的能量或感情特征的；冲动的和热情的
Having or marked by violent force:
猛烈的，奔腾的：
例句：
impetuous, heaving waves.
奔腾汹涌的浪花

来源：
Middle English [violent]
中古英语 [猛烈的]
from Old French impetueux
源自 古法语 impetueux
from Late Latin impetuôsus
源自 后期拉丁语 impetuôsus
from Latin impetus [impetus] * see impetus
源自 拉丁语 impetus [刺激] *参见 impetus

【引伸】
impet.uously
adv.（副词）
impet.uousness
n.（名词）
<参考词汇><同义词>impetuous,heedless,hasty,headlong,precipitate,suddenThese adjectives describe people and their actions when they are marked by abruptness or lack of deliberation.
这些形容词描述鲁莽或缺乏谨慎的人以及这时的行为。
Impetuous suggests forceful impulsiveness or impatience:
Impetuous 意味着强烈的冲动和不耐心；
例句：
.[a race driver who was] flamboyant, impetuous, disdainful of death. (Jim Murray).
.［一个赛车手］ 辉耀的，冲动的，对死亡充满蔑视的人 （吉姆·默莱）。

Heedless implies carelessness or lack of a sense of responsibility or proper regard for consequences:
Heedless 含有粗心的、没有责任感的或不考虑后果的意思：
例句：
.Hobbling down stairs with heedless haste, I set my foot full in a pail of water. (Richard Steele).
.鲁莽地匆匆蹦跳着下了楼梯，我把双脚全部泡进了水桶里. （里查德·斯蒂尔）。

Hasty andheadlong both stress hurried, often reckless action:
Hasty 和headlong 都强调匆忙的， 经常是不计后果的行动：
例句：
.Hasty marriage seldom proveth well. (Shakespeare).
.草率的婚姻很少有好结果. （莎士比亚）。

例句：
The soldiers made a headlong rush for cover.
士兵们不顾一切冲向掩蔽所。

Precipitate suggests impulsiveness and lack of due reflection:
Precipitate 意思是冲动和缺乏应有的考虑：
例句：
.Some of the fickle populace began to doubt whether they had not been rather precipitate in deposing his brother. (Washington Irving).
.一些多变的人开始怀疑他们把他的兄弟废除掉是不是太不考虑后果了. （华盛顿·欧文）。

Sudden applies to what becomes apparent abruptly or unexpectedly:
Sudden 用于变得突然或出乎意料明显的事物：
例句：
The patient is given to sudden and inexplicable paroxysms of anger.
病人突然且无法解释地愤怒发作起来。