逼不得已

Explanation: Force: force. Forced 　　Usage: The main predicate; as predicate; that were forced 　　Source: Song Zhangjun room "Yun Ji Qi signed" Volume 85: "For the demand side, the end is unattainable, the cloud-wei does not deserve the bone, forced, wife autopsy away." Thesaurus:  be driven to do something, raise the standard of revolt, join force with, join hand in hand Antonym Group:  Bujin grace, Minghangqishi