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awfully; terribly
彼の態度がどうにもいやになって距離を置くことにした。
I got so sick of his attitude that I decided to distance myself.
毎日同じ仕事の繰り返しでいやになることもあるだろう。
Doing the same work every day can become tiresome.
いやになるほど練習を重ねてようやく上達できた。
I finally improved after practicing until I was sick of it.