Definition
To experience a significant setback or harsh treatment, particularly at a time when support or positive outcomes are expected.
（尤指在需要幫助時遭受的）惡劣對待，嚴重打擊
The bank's refusal to grant us the loan when we needed the funding most was a real kick in the teeth.
在我們最需要資金的時候，銀行拒絕給我們貸款，這真是當頭一棒。
Being told the project was cancelled after putting in so much time and effort felt like a real kick in the teeth to him.
投入了這麼多時間和精力後，卻被告知項目取消，對他來說真是當頭一棒。
The company’s promise of a raise, followed by the reduction in benefits was a real kick in the teeth for the employees.
公司承諾加薪，隨後卻減少福利，這對員工來說真是當頭一棒。