在中文中，可以用"粗心"或"疏忽"来形容某人缺乏注意力或小心。
在英文中，可以用 "careless" 来表示某人粗心。这个词的来源可以追溯到中世纪拉丁语 "carus"，意思是"喜爱"或"小心"，后来发展为 "care"，意思是"关心"或"注意"。 "Careless" 的后缀 "-less" 意思是"缺乏"，所以 "careless" 本意就是"缺乏关心"或"缺乏注意力"。
下面是一些用 "careless" 表示某人粗心的英文例句，并附有中文翻译：
He was careless and left his wallet on the bus. (他粗心大意，把钱包忘在公交车上了。)
She made a careless mistake and forgot to turn off the stove. (她疏忽了，忘记关掉炉子了。)
He was careless with his words and hurt his friend's feepngs. (他说话粗心，伤害了朋友的感受。)
The careless driver didn't see the stop sign and almost caused an accident. (那个粗心的司机没看到停止标志，差点造成事故。)