二度寝（にどね、nidone）
- going back to sleep

The Japanese word 二度寝 (二度寝) means "to go back to sleep" or "to sleep again" after waking up briefly. It describes the act of returning to sleep after initially getting up or being partially awake. It's often used when someone wakes up early, perhaps to an alarm or a brief sound, and then falls back asleep.

⚫︎目覚まし時計が鳴ったけど、二度寝しちゃった。 Translation: I overslept because I hit the snooze button on my alarm. ⚫︎週末はゆっくり二度寝するのが好きです。 Translation: I like to sleep in on weekends. ⚫︎疲れていたので、一度起きたけどまた二度寝してしまった。 Translation: I was tired, so I woke up once, but then I fell back asleep.

You can use 二度寝 (二度寝) in conversations to talk about your sleeping habits or to describe someone else's. It's suitable for casual and informal conversations. You can use the verb form, such as 二度寝する (to go back to sleep), or refer to the state of having done it, using the past tense 二度寝した.

⚫︎The word 二度寝 is typically written in kanji and hiragana: 二度寝. ⚫︎二度 means "second time" or "twice", and 寝 means "sleep". ⚫︎The verb form is 二度寝する. ⚫︎The past tense is 二度寝した.

There aren't many direct synonyms, but phrases describing a similar situation include: ⚫︎もう一度寝る (mou ichido neru) - To sleep again. ⚫︎"To hit the snooze button" - While not a direct translation, it often leads to 二度寝.

There aren't specific antonyms, but words related to waking up could be considered opposites in a sense: ⚫︎起床 (kikyou) - Getting up (from bed). ⚫︎目覚める (mezameru) - To wake up.

昨日の夜はなかなか寝付けなくて、朝はすぐに目が覚めたんだけど、結局二度寝しちゃったんだ。 ・Translation: I couldn't fall asleep easily last night, and I woke up early this morning, but I ended up going back to sleep. ・Explanation: This sentence describes the experience of having trouble sleeping and then engaging in 二度寝.

今日の朝は寒くて、一度起きたけど布団から出られなくて、つい二度寝してしまった。 ・Translation: It was cold this morning, and I woke up once, but I couldn't get out of bed, so I ended up going back to sleep. ・Explanation: This sentence explains why someone might 二度寝 due to the cold.

The etymology is straightforward. 二度 (nido) means "second time" or "twice," and 寝 (ne) means "sleep." Therefore, 二度寝 is literally "second sleep" or "sleeping a second time".