What does 徹夜 mean?
徹夜 is a Japanese noun meaning “staying up all night, sleepless night” in English. It is written as 徹夜 in kanji, てつや in hiragana, and tetsuya in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
私はよく徹夜する。
I often stay up all night.