
Questions & Answers about itami de nemuremasen.
It is read:
いたみで ねむれません。
- 痛み = いたみ
- で = で
- 眠れません = ねむれません
In normal Japanese writing, it would usually be written without spaces:
痛みで眠れません。
痛み is a noun meaning pain.
- 痛い is an i-adjective meaning painful / hurts
- 痛み is the thing itself: pain
So:
- 痛い = it hurts / painful
- 痛み = pain
In this sentence, the speaker is saying that pain is the reason they cannot sleep, so the noun 痛み fits naturally.