Usage of 不由得
不由得 is an adverb used to express that someone cannot help but do something, often an emotional or involuntary reaction. It implies that the action or feeling happens naturally and without conscious control.
Common contexts
It is frequently used with verbs related to emotions or spontaneous actions, such as 笑 (laugh), 感到 (feel), 想起 (recall), 停下 (stop), or 流下 (shed, as in tears).
Collocations and patterns
- 不由得 + verb: Indicates an involuntary or spontaneous action.
- Often appears after a cause or stimulus clause, e.g., 看到..., 听到..., 引起了..., showing what triggers the reaction.
Nuance and register
The phrase is somewhat formal and common in written and spoken Mandarin, especially in narrative or descriptive contexts. It conveys a natural, uncontrollable emotional or physical response.
Common confusion
Do not confuse 不由得 with 不得不, which means "have to" or "must" implying obligation, whereas 不由得 emphasizes inability to restrain oneself.