たいあん 大安 LinksSentence search for 大安Sentence search for たいあんSentence search for だいあんKanji details for 大 and 安Edit in JMdict Noun1. day that is lucky the whole day (in the traditional calendar); auspicious daySee also 六曜Other forms大安 【だいあん】 Discussions Log in to talk about this word.