careless
US /ˈker.ləs/
UK /ˈker.ləs/

1.
粗心的, 不小心的, 漫不經心的
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.
他粗心大意地把門開著。
•
He made a careless mistake on the exam.
他在考試中犯了一個粗心的錯誤。
2.
漠不關心的, 不關心的, 無憂無慮的
not concerned or worried about something
:
•
She was careless of the consequences of her actions.
她對自己的行為後果漠不關心。
•
He seemed completely careless about his future.
他對自己的未來顯得完全漠不關心。