撤回前言;取消諾言;打退堂鼓
to say that you cannot do sth that you promised to do
She said she was coming to the party, but cried off at the last moment.她說過她要來參加聚會,可到最後一刻又變卦了。
釋義來自《牛津高階英漢雙解詞典》第 9 版