えいや

interjection

go for it; heave; ugh

An exclamation used when making a sudden effort, lifting something heavy, or psyching oneself up. Covers both physical exertion and mental determination.

• 「えいや！」と叫さけんで、重おもい箱はこを持もち上あげた。

  With a shout of "Heave!", I lifted the heavy box.

• えいやっ！と気き合あいを入いれて、試し験けんに臨のぞんだ。

  I psyched myself up with an "Ugh!" and faced the exam.