JLPT N1 Vocabulary 改悪 (kaiaku) deterioration, changing for the worse JLPT N1 Learning Done Flashcards 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
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