睡眠（すいみん、suimin）
- sleep

The Japanese word 睡眠 (すいみん - suimin) means "sleep" or "sleeping". It refers to the state of rest where the body and mind are inactive, and consciousness is suspended or reduced. It is a fundamental physiological process essential for health and well-being. ⚫︎It encompasses the act of resting and the state of being asleep. ⚫︎It's a crucial part of our daily routine, needed for physical and mental restoration.

⚫︎十分な睡眠 Translation: Sufficient sleep. ⚫︎睡眠不足で体調が悪い。 Translation: I feel unwell because of lack of sleep. ⚫︎昨夜はぐっすり睡眠できた。 Translation: I slept soundly last night.

睡眠 is used in various contexts related to sleep. ⚫︎It is commonly used when discussing sleep duration, quality, sleep disorders, and general discussions about rest. ⚫︎You can use it in formal and informal situations, though the level of formality might influence the sentence structure around it. ⚫︎It's appropriate in conversations with friends, family, doctors, and in written communications.

⚫︎The word 睡眠 is most commonly written using the kanji 睡眠. ⚫︎The reading is すいみん in hiragana. ⚫︎The kanji 睡 (sui) means "sleep," and 眠 (min) means "to sleep". ⚫︎It is not typically written in katakana. ⚫︎There are no variations in okurigana.

There are no perfect synonyms for 睡眠, but related terms include: ⚫︎寝る (neru) - to sleep. (This is a verb, not a noun like 睡眠.) ⚫︎休息 (kyuusoku) - rest. (This encompasses more than just sleep.) ⚫︎安眠 (anmin) - sound sleep (comfortable, restful sleep).

⚫︎覚醒 (kakusei) - wakefulness, awakening. ⚫︎起きている (okiteiru) - being awake. ⚫︎不眠 (fumin) - insomnia.

健康のためには、毎晩十分な睡眠をとることが大切です。 ・Translation: It's important to get enough sleep every night for your health. ・Explanation: This sentence emphasizes the importance of getting enough sleep for overall health.

最近、睡眠の質が悪くて困っています。 ・Translation: I'm having trouble with the quality of my sleep recently. ・Explanation: This sentence describes the speaker's concern about the quality of their sleep.

The word 睡眠 is a compound word formed from the kanji 睡 (sui), which means "to sleep" or "to doze," and 眠 (min), which also means "to sleep" or "to be sleepy." ⚫︎The combination of these two kanji creates a word that specifically refers to the act and state of sleeping. ⚫︎The etymology clearly indicates the essence of the word.