Japanese phrase
眠れません。 nemu re ma se n
Meaning
I can't sleep.
When to use it
States that the speaker is unable to sleep at the moment. The polite wording is direct and common in everyday conversation about tiredness, stress, or discomfort.
Example dialogue
どうしたんですか？ dō shi ta n de su ka
Did something happen?
考え事が多くて、眠れません。 kanga e goto ga ō ku te nemu re ma se n
I have a lot on my mind, so I can't sleep.