careless
US /ˈker.ləs/
UK /ˈker.ləs/

1.
粗心的, 不小心的, 漫不经心的
not giving enough attention and thought to what you are doing, with the result that you make mistakes, damage things, or cause harm to someone
:
•
It was careless of him to leave the door unlocked.
他粗心大意地把门开着。
•
He made a careless mistake on the exam.
他在考试中犯了一个粗心的错误。
2.
漠不关心的, 不关心的, 无忧无虑的
not concerned or worried about something
:
•
She was careless of the consequences of her actions.
她对自己的行为后果漠不关心。
•
He seemed completely careless about his future.
他对自己的未来显得完全漠不关心。