てつや 徹夜 Common word JLPT N3 Wanikani level 41 Play audio LinksSentence search for 徹夜Sentence search for てつやKanji details for 徹 and 夜Edit in JMdict Noun, Suru verb, Intransitive verb, Noun which may take the genitive case particle 'no'1. staying up all night Discussions Log in to talk about this word.