JLPT N1 Vocabulary 先先月 (sensengetsu) month before last JLPT N1 Learning Done Flashcards Recall mode Meaning 先先月 (せんせんげつ, sensengetsu) is a JLPT N1 vocabulary word meaning “month before last”. Kanji in this word 先 before 月 month ← Previous時刻表 All N1 vocabulary Next →異議