えいえいおー or エイエイオー • (eieiō)
- 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]:
- 幼稚園のイベントがあるたびにちょろっと挨拶するくらいのもんなんですが、お世話になってる恩返しということで引き受けました。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.
- 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:
- 山下さんが「いざ、出陣じゃあ」と声を上げると、甲州軍団は「エイエイオー」と勇ましく応えて動き出した。
- 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.
