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to be amazed; to be shocked; to be astonished; to be astounded; to be disgusted; to be exasperated; to be fed up
何度言っても直さない彼の無責任さに呆れてしまった。
I was shocked by his irresponsibility.
その話を聞いて呆れて物が言えない。
After hearing that, I was too shocked to speak.
信じられないと呆れた表情で彼女を見つめた。
I stared at her with an amazed expression.