The Chinese word 粗心 means “careless” or “thoughtless”. It is commonly used to describe someone who is not paying attention to details or who is prone to making mistakes due to lack of focus. For example, you might say “他很粗心，常常忘记带钥匙” which means “He’s very careless, he often forgets to bring his keys”.
Adjective: careless, thoughtless
|他很粗心，老是把东西弄丢了||tā hěn cūxīn, lǎo shì bǎ dōngxi nòng diū le||He is very careless and always loses things|
|我们要注意细节，不要因为粗心而犯错||wǒmen yào zhùyì xìjié, bùyào yīnwèi cūxīn ér fàncuò||We need to pay attention to details and not make mistakes because of carelessness|
|她太粗心了，常常忘记做家庭作业||tā tài cūxīn le, chángcháng wàngjì zuò jiātíng zuòyè||She is too careless and often forgets to do her homework|
|他粗心大意，结果把文件弄丢了||tā cūxīn dàyì, jiéguǒ bǎ wénjiàn nòng diū le||He was careless and lost the documents as a result|
|我的朋友很粗心，总是把手机落在别处||wǒ de péngyǒu hěn cūxīn, zǒng shì bǎ shǒujī luò zài bié chù||My friend is very careless and always leaves his phone elsewhere|
|她粗心马虎，常常把事情搞砸了||tā cūxīn mǎhǔ, chángcháng bǎ shìqíng gǎo zá le||She is careless and often messes things up|
粗心 is part of HSK Level 4 in both HSK 2.0 and HSK 3.0.