えいえいおー

Japanese

Interjection

えいえいおー or エイエイオー • (eieiō) 

1. a cheer of encouragement
   • 2019 April 11, Yusuke Kushii, “Nenchō-san ni natta musume no nyūshi ga nuketa!! [My older daughter's tooth fell out!!]”, in 941 no ikumen tsurezure‎^[1]:

     幼(よう)稚(ち)園(えん)のイベントがあるたびにちょろっと挨(あい)拶(さつ)するくらいのもんなんですが、お世(せ)話(わ)になってる恩(おん)返(がえ)しということで引(ひ)き受(う)けました。やるぞー！えいえいおー。

     Yōchien no ibento ga aru tabi ni chorotto aisatsu suru kurai no mon na n desu ga, o-sewa ni natteru ongaeshi to iu koto de hikiukemashita. Yaru zō! Eieiō.

     I offered only a tepid greeting whenever there was a kindergarten event, but I feel obliged to repay your kind assistance. Let's do it! Ei ei oh.

2. a battle cry, a cry for victory
   • 2019 April 7, “Kaifu 500-nen Yamashita ‘Shingen’ fushime no shutsujin [Kaifu 500 years: Yamashita’s ‘Shingen’ turning point]”, in Yomiuri Shimbun‎^[2], archived from the original on 24 April 2019:

     山(やま)下(した)さんが「いざ、出(しゅつ)陣(じん)じゃあ」と声(こえ)を上(あ)げると、甲(こう)州(しゅう)軍(ぐん)団(だん)は「エイエイオー」と勇(いさ)ましく応(こた)えて動(うご)き出(だ)した。

     Yamashita-san ga “iza, shutsujin jā” to koe o ageru to, Kōshū gundan wa “eieiō” to isamashiku kotaete ugokidashita.

     When Yamashita called “Now, to battle,” the Kōshū army valiantly replied “ei ei oh” and set out.