えいえいおー

interjection

hurray; hurrah

A traditional Japanese cheer, often shouted in a group before an effort or celebration. Typically followed by おー.

• みんなで「えいえいおー！」と叫さけんだ。

  Everyone shouted 'Eiei-oh!' together.

• 運うん動どう会かいの前まえに、円えん陣じんを組くんでえいえいおーをした。

  Before the sports day, we formed a circle and did an 'eiei-oh' cheer.