JLPT N1 Vocabulary 改悪 (kaiaku) deterioration, changing for the worse JLPT N1 remind1 day3 days7 days16 days35 days Done Flashcards Sign in to track progress Recall mode Meaning 改悪 (かいあく, kaiaku) is a JLPT N1 vocabulary word meaning “deterioration, changing for the worse”. Kanji in this word 改 reformation 悪 bad ← Previous連中 All N1 vocabulary Next →刷り
