(名詞/可數) (早晨) 早起床 － 比平常早很多就上床睡覺，然後在隔天早晨提早起床。
Lie-in (名詞) 意為「(早晨) 晚起床，賴床」；片語動詞 lie in 意為「睡懶覺」(參見下面的例句)。Reverse lie-in 與 lie-in 正好相反。
引句：
I decided I had had enough of being permanently exhausted, and always wishing I could have a lie-in. I had to accept that, as a 40-year-old mother, my days of lie-ins are behind me. So … every day, I have a reverse lie-in. A reverse lie-in, for those who have no idea what I'm talking about, involves going to bed extremely early. And I mean extremely early. Toddler early. We're talking 8pm here, at the latest.
[telegraph.co.uk, 15 May 2021]
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例句：
- She's not working tomorrow so she can have a bit of a lie-in. (她明天不上班，所以她可以晚一點起床)
- It's a holiday tomorrow, so I can lie in. (明天是假日，我可以睡懶覺了)
- It was a Sunday, so Daniel could lie in till almost lunch time. (那是個星期天，所以丹尼爾可以睡懶覺一直睡到快要吃午飯的時候)