呆れ果てる

プログレッシブ和英中辞典(第4版)

あきれはてる【^×呆れ果てる】

be dum(b)founded

この寒いのに泳ぐとは全くあきれ果てたやつだ
I was dumbfounded [《口》 flabbergasted] to see you swimming in such cold weather.

彼の無謀さにはあきれ果てた
I was too amazed [astounded] at [by] his recklessness to say anything.

彼の図々しさにはあきれ果てた
We were thoroughly disgusted at [by] his impudence.

出典　小学館「プログレッシブ和英中辞典(第4版)」