プログレッシブ和英中辞典(第4版)の解説
うらぎる【裏切る】
❶〔仲間との約束・信義を破る〕betray；《口》 double-cross
友人を裏切る
betray one's friend
彼に裏切られたような気がする
I feel that I have been cheated [betrayed] by him.
彼は私に対する約束を裏切った
He broke his promise to me.／He went back on his word.
彼が私を裏切るとは思わなかった
I never thought he would play me false.
彼女は夫を裏切った
She was unfaithful to her husband.
彼は味方を裏切って殺された
He was killed for having double-crossed [sold out] his friends.
❷〔期待に反する〕
彼は失敗して彼女の期待を裏切った
His failure disappointed her.
彼は世間の期待を裏切った
He failed to live up to the people's expectations.／He let the people down.