Englishfor English speakers
reckless
Adjective
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If you are reckless, you act without caring about problems your action might cause.
Many teens are involved in high-risk behaviors such as smoking and reckless driving.
I'm sorry I hurt so many people by my own reckless attitude and behaviour.
negligence
Noun
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Negligence is the state of being careless and negligent.
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Negligence refers to the state or quality of not taking care of the needs of a person or animal or not taking personal responsibility.