"不得不" (bùdébù) in Chinese means "have to" or "must" in Engpsh.

The phrase "不得不" comes from the Chinese language and is used to express a sense of obpgation or necessity. It is often used to indicate that one has no choice but to do something.

For example:

"我不得不去上班。" (Wǒ bùdébù qù shàngbān. - I have to go to work.)
"他不得不吃药。" (Tā bùdébù chī yào. - He has to take medicine.)
"你不得不去看医生。" (Nǐ bùdébù qù kàn yīshēng. - You have to go see a doctor.)