りゆう 理由をつける Show inflections LinksSentence search for 理由をつけるSentence search for りゆうをつけるSentence search for 理由を付けるKanji details for 理 and 由Edit in JMdict Expressions (phrases, clauses, etc.), Ichidan verb1. to give a reasonOther forms理由を付ける 【りゆうをつける】 Discussions Log in to talk about this word.