粗心
Pinyin: cū xīn
careless
Example sentence
粗心让他丢了十分。
Cūxīn ràng tā diū le shí fēn.
Carelessness cost him ten points.
What 粗心 means
粗心 (cū xīn) is a Chinese word meaning “careless”. It belongs to the Describing Words topic and appears at HSK 4, so it is one of the words worth learning early when you study Chinese.