あとまつ 後の祭り LinksSentence search for 後の祭りSentence search for あとのまつりSentence search for 後の祭Kanji details for 後 and 祭Edit in JMdict Expressions (phrases, clauses, etc.), Noun1. a day after the fair; (at a) stage when it's too lateIdiomatic expressionOther forms後の祭 【あとのまつり】 Discussions Log in to talk about this word.