carelessness

英 [ˈkeələsnəs]

美 [ˈkerləsnəs]

n. 粗心大意；草率；快活；淡漠

BNC.14148 / COCA.19116

柯林斯词典

ADJ-GRADED 粗心的;大意的
If you arecareless, you do not pay enough attention to what you are doing, and so you make mistakes, or cause harm or damage.
1. I'm sorry. How careless of me...
  对不起,我太不小心了。
2. Some mothers were a bit careless with money...
  有些当妈妈的花钱有点随意。
3. Mr Clarke had pleaded guilty to causing death by careless driving.
  克拉克先生疏忽驾驶,致人死亡,已经认罪。
ADJ-GRADED 不在乎的;不在意的
If you say that someone iscareless ofsomething such as their health or appearance, you mean that they do not seem to be concerned about it, or do nothing to keep it in a good condition.
1. He had shown himself careless of personal safety where the life of his colleagues might be at risk...
  当同事身处危险时他表现英勇，不顾个人安危。
2. She's careless about her hygiene...
  她不注意个人卫生。
3. That shows a fairly careless attitude to clothes, doesn't it?
  那表明此人不讲究穿着,是吧?
ADJ-GRADED 随意的;自信的;轻易的
If you describe someone's movements ascareless, you mean that they are relaxed or confident, and do not seem to require much effort or thought.
1. With a careless flip of his wrists, he sent the ball quickly on its way.
  他手腕轻轻一抖,球就飞出去了。

noun

failure to act with the prudence that a reasonable person would exercise under the same circumstances
Synonym:negligenceneglectnonperformance
the quality of not being careful or taking pains
Synonym:sloppiness

I used this word from carelessness.
我使用这个词是出于疏忽。
Accidents often arise from carelessness.
事故常起因于粗心。
Carelessness is an old weakness of his.
粗心大意是他的老毛病。
We always have to patch up for his carelessness.
他这个人做事，总要别人替他打补丁。
Carelessness deserves the blame for many accidents.
许多事故归咎于粗心大意。
Carelessness often causes accidents.
疏忽大意就可能引起事故。
He admitted his carelessness to me.
他向我承认了他的粗心大意。
We all made mistakes with carelessness.
我们都因粗心犯了错误。
We are used to his carelessness.
我们习惯了他的粗心大意。
His carelessness resulted in his failure in the math contest.
他的粗心导致了他在数学竞赛中的失败。