This question is about idiomatic usage of language. The grammatical side of the difference between 寝ろ and 寝てろ is clearly explained here. But I think there is another part of this question: in what situations should one be used over the other? I was recently corrected by a native speaker friend who said 早く寝てろ was incorrect. They said it should be 早く寝ろ. And it prompted me to think if I have been overusing 寝てろ.

Is the use of 早く寝てろ in the two examples shown below idiomatic? Why or why not?

Why does 早く寝てろ sound unnatural in some contexts? And in exactly what situations should we use 早く寝てろ no 早く寝ろ? More generally also: When do we say 寝てろ? When do we say 寝ろ?

Pic 1, source

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Pic 2, source

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  • Where does the first image come from? I don't think みんなの迷惑かける is a valid Japanese... Commented Aug 14, 2022 at 0:33
  • @broccolifacemask Both are from Google Images.
    – Eddie Kal
    Commented Aug 14, 2022 at 0:34
  • @EddieKal they should both have original sources though, presumably. Google Images doesn't tell us much.
    – Leebo
    Commented Aug 14, 2022 at 1:43
  • 「俺が家まで送るから、早く寝てろ」の例ですが、どういう状況かわかりませんよね‥?「俺が(後でお前以外の誰かを)家まで送るので、(お前はそれまでに)早く寝ていろ」って意味か、「俺が(今からお前を)家まで送るので、(そのあと俺たちが何かをしている間、お前は)早く寝ていろ」でしょうかね・・・
    – chocolate
    Commented Aug 14, 2022 at 1:53
  • @Leebo You are right. Updated!
    – Eddie Kal
    Commented Aug 14, 2022 at 3:42

2 Answers 2







「先に行け。/ 先に行って。」-- 今、自分より先に出発するように、ということに焦点を置いている感じです。
「先に行ってろ。/ 先に行ってて。」-- 自分は後から追いつくので、それより先に行って、自分が行った時にはそこにいるように、ということに焦点を置いている感じです。


I would feel "早く寝てろ" natural if the speaker's intention was to express "You should be in bed. You do need to have a rest. I am worried about you."

The phrase sounds very sympathetic. If you just want to say "Go to bed," "早く寝ろ" fits well in most cases.

It is somewhat broken because a straightforward translation would be like "Stay in bed soon," which might be the reason why your friend said it's wrong. This phrase may be the one the speaker cannot help but saying before thinking abount correctness.

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