ええじゃないか

ええじゃないかeejanaika

noun

  1. carnival-like religious celebrations (e.g. dancing festivals) that occurred across Japan from June 1867 to May 1868
  2. why not?

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences