Sleep
noun, の adjective
Feeling drowsy and like I want to sleep. I just want to sleep so bad.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
昨日の睡眠時間はたったの三時間でした。
I slept for only three hours yesterday.
睡眠の質を高めるには、どうすればいいんですか？
What should I do to improve the quality of my sleep?
赤ちゃんが生まれると、親はしばらく睡眠不足になることが多い。
When a baby is born, parents are often sleep deprived for a while.
彼は、給与の良い管理職へ昇格したいがために、睡眠時間を削って一生懸命働いている。
He wants to be promoted to management for better pay so he works hard by cutting down on his sleep.