negligent /ˈnɛglɪʤənt/ adjective Learner's definition of NEGLIGENT
[more negligent; most negligent]
: failing to take proper or normal care of something or someone疏忽的；粗心大意的 -
The fire was started by a negligent smoker.火灾是有人随便吸烟引起的。
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negligent parents粗心大意的父母
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He was negligent in not reporting the accident to the police.他一时疏忽，没把事故报告给警方。
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She was negligent about sending a thank-you note. [=she neglected to send a thank-you note]她一时疏忽忘记写感谢信了。