Usage note
粗心用来形容做事时不仔细，容易出错。
cū xīn lái yòng zuò shì bù zǐ xì, róng yì chū cuò.
粗心 is used to describe being careless and prone to making mistakes.
Context note
这个词语常用于描述做作业、考试或日常生活中不小心犯错的情况。
zhè gè cí yǔ cháng yòng zuò shì bù xǐng wén, kǎo shì huò dān rì yè shēng zhōng bù xīng fàn cuò de qíng kuàng.
This word is commonly used to describe situations where mistakes are made due to carelessness in doing homework, exams, or daily life.
5 examples
他粗心地把作业写错了。
tā cū xīn dì bǎ zuò yè xiě cuò le。
He wrote his homework wrong because he was careless.
妈妈批评我太粗心了。
mā ma pī píng wǒ tài cū xīn le。
Mom criticized me for being too careless.
考试时要细心，不要粗心大意。
kǎo shì shí yào xì xīn， bú yào cū xīn dà yi。
Be careful during exams, don’t be careless.
他总是因为粗心而忘记带钥匙。
tā zǒng shì yīn wèi cū xīn ér wàng jì dài yào shi。
He always forgets to bring his keys because he is too careless.
做实验时要仔细，不要粗心大意。
zuò shí yàn shí yào zǐ xì， bú yào cū xīn dà yi。
Be careful when doing experiments, don’t be careless.
5 mini stories
小明粗心地把作业写错了，结果被老师批评了。
xiǎo míng cū xīn dì bǎ zuò yè xiě cuò le， jié guǒ bèi lǎo shī pī píng le。
Xiaoming wrote his homework wrong because he was careless and got criticized by the teacher.
妈妈提醒我做事情要细心，不要粗心大意。
mā ma tí xǐng wǒ zuò shì qíng yào xì xīn， bú yào cū xīn dà yi。
Mom reminded me to be careful when doing things, don’t be too careless.
小红总是因为粗心而忘记带钥匙，这次她决定改正这个坏习惯。
xiǎo hóng zǒng shì yīn wèi cū xīn ér wàng jì dài yào shi， zhè cì tā jué dìng gǎi zhèng zhè ge huài xí guàn。
Xiaohong always forgets her keys because she is too careless and decided to change this bad habit.
考试时他很细心，没有粗心大意，所以考得很好。
kǎo shì shí tā hěn xì xīn， méi yǒu cū xīn dà yi， suǒ yǐ kǎo dé hěn hǎo。
During the exam, he was very careful and didn’t make any mistakes, so he did well.
做实验时要仔细观察，不要粗心大意，以免出错。
zuò shí yàn shí yào zǐ xì guān chá， bú yào cū xīn dà yi， yǐ miǎn chū cuò。
Be careful when observing during experiments, don’t be too careless to avoid making mistakes.
Mini dialogue
粗心的我
A
我考试时太粗心了，看错了题目。
Wǒ kǎoshì shí tài cūxīn le, kàn cuò le tímù.
I was too careless during the exam and misread the question.
B
没关系，下次细心一点就好。
Méiguānxi, xià cì xìxīn yīdiǎn jiù hǎo.
It's okay, just be more careful next time.
找钥匙
A
我又找不到钥匙了，我真粗心。
Wǒ yòu zhǎo bù dào yàoshi le, wǒ zhēn cūxīn.
I can't find my keys again. I'm so careless.
B
别着急，我们一起找。
Bié zhāojí, wǒmen yīqǐ zhǎo.
Don't worry, let's look for them together.
Related words and contrasts
opposite
细心
xì xīn
careful
粗心 means careless, 细心 means careful.
similar
马虎
mǎ hu
sloppy
马虎 is a common word for being careless or sloppy.