不由

不由 means 'cannot help but' or 'unavoidably,' expressing an action or feeling that happens without conscious control. It often conveys a sense of inevitability or natural reaction.

The character 不 (bù) means 'not,' and 由 (yóu) means 'to come from' or 'to be caused by.' Together, 不由 suggests something that happens without intentional effort, as if it arises naturally or is unavoidable.

不由 is commonly used in expressions like 不由自主 (bù yóu zì zhǔ), meaning 'to act without thinking,' which reflects cultural values of spontaneity and emotional authenticity in Chinese communication.