深夜（しんや、shinya）
- late night

The word 深夜 深夜 (しんや) refers to the late night hours, typically between midnight and dawn. It specifically denotes the time when it is very late at night and most people are asleep. It often suggests a time of quietness and darkness.

⚫︎深夜にテレビを見ます。 Translation: I watch TV late at night. ⚫︎深夜バスは静かです。》 Translation: The late-night bus is quiet. ⚫︎深夜の3時に電話が来ました。》 Translation: I got a call at 3 AM.

⚫︎You can use 深夜 in various contexts, such as describing events, activities, or feelings that occur during the late hours of the night. ⚫︎It's suitable for both formal and informal conversations. ⚫︎You might use it to talk about studying, working, or anything else that happens while most people are sleeping.

⚫︎The word 深夜 is typically written with the kanji 深夜, and the reading is しんや in hiragana. ⚫︎There are no significant variations in okurigana. ⚫︎Katakana is not typically used for this word.

⚫︎夜中 (よなか) - midnight; the middle of the night ⚫︎真夜中 (まよなか) - midnight; deep night ⚫︎未明 (みめい) - early dawn; before daybreak

⚫︎昼間 (ひるま) - daytime ⚫︎朝 (あさ) - morning ⚫︎夕方 (ゆうがた) - evening

深夜まで宿題をしました。 ・Translation: I did my homework until late at night. ・Explanation: This sentence describes the activity of doing homework during the late-night hours.

深夜のコンビニは人が少ない。 ・Translation: There are few people at the convenience store late at night. ・Explanation: This sentence describes the typical state of convenience stores during 深夜.

The word 深夜 is a compound word formed from two kanji: 深 (しん), meaning "deep" or "late," and 夜 (や), meaning "night." Therefore, it literally means "deep night" or "late night."