プログレッシブ和英中辞典(第4版)の解説
へいこう【閉口】
その質問に彼も閉口した
That question threw even him off balance.／Even he was nonplussed [《口》 stumped] by that question.
彼のしつこさには閉口する
His persistence is really exasperating.／《口》 I can't stand the way he keeps bugging me.
庭のぶよには閉口する
The gnats in the garden are a nuisance.
あの哲学書には閉口した
That book on philosophy was too much for me.