Synonym Nuance VS
How to say "Sleep" in Japanese
Both words can translate to "sleep", but which should you choose?
Japanese Option A
寝る
ねる (neru)
N5 / CEFR Syllabus
VS
Japanese Option B
睡眠
すいみん (suimin)
N3 / CEFR Syllabus
Nuance Contrast & Translation Difference
When translating "sleep" into Japanese, you must choose carefully between 寝る and 睡眠.
In Japanese, 寝る (ねる (neru)) is typically associated with "to sleep, to go to bed" (Syllabus Level: N5) and represents A fundamental daily activity verb. Polite form is 寝ます.
On the other hand, 睡眠 (すいみん (suimin)) maps to "sleep (noun)" (Syllabus Level: N3) and represents Refers to the act or state of sleeping, often used in formal contexts or to discuss the quality/quantity of sleep. よりカジュアルには「寝る」を使います。. A literal translation of "sleep" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "寝る"
昨日は早く寝ました。
I went to bed early yesterday.
Bilingual Context for "睡眠"
毎日7時間の睡眠をとるようにしています。
I try to get 7 hours of sleep every day.
Nuance Mastery Quiz
Which Japanese word perfectly fits this blank space?
Fill in the blank: "昨日は早く寝ました。" (Meaning: "I went to bed early yesterday.")
🎉 Correct Answer!
Remember: "寝る" fits here because it means "to sleep, to go to bed" in the context of: "I went to bed early yesterday.". "睡眠" represents "sleep (noun)".