ㄅㄨˋㄉㄜˊˇ

  1. 心中無可奈何不能不如此三國演義·》:沿途不得已。」拍案驚奇·》:不得已再度一個越發崎嶇。」

to act against one's will, to have no alternative but to, to have to, to have no choice, must
à contrecoeur