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awfully; frightfully; desperately; violently; unduly; extremely
今日は彼女がやけに機嫌がいいね。
She's in an unusually good mood today, isn't she?
やけに静かだなと思ったら誰もいない。
I thought it was awfully quiet, and no one was there.
最近やけに疲れやすくなってきた。
I've been getting awfully tired easily recently.