徹夜 てつや tetsuya staying up all night JLPT N3 noun suru verb no-adjective Common word The kanji in this word 徹 penetrate, clear, pierce JLPT N1 · Strokes 15 夜 night, evening JLPT N4 · Strokes 8 In this level 鉄 哲学 手伝い 徹底 鉄道 手間 デモ 典型 天候 電子 Back to the JLPT N3 list Practise these words