いび 忌み日 LinksSentence search for 忌み日Sentence search for いみびSentence search for 忌日Sentence search for 斎日Kanji details for 忌 and 日Edit in JMdict Noun1. unlucky day (according to astrology); (previously a) death anniversary; purification and fast daySee also 陰陽道Other forms忌日 【いみび】、斎日 【いみび】 Discussions Log in to talk about this word.