early 15c., "weak, dissolved," from Latin remissus "relaxed, languid; negligent," past participle of remittere "slacken, abate, let go" (see remit). Meaning "characterized by lack of strictness" is attested from mid-15c.; that of "characterized by negligence" is from mid-15c.
实用例句
1. I would be remiss if I did not do some-thing about it.
如果我对此不做点儿什么，就是不负责任。
来自柯林斯例句
2. It was remiss of them not to inform us of these changes sooner.
他们粗心大意，没有早一些通知我们这些变化。
来自《权威词典》
3. It was remiss of him to forget her birthday.
他竟忘了她的生日,实在是糊涂.
来自《简明英汉词典》
4. I would be remiss if I did not do something about it.