不由自主

• Pinyin: bù yóu zì zhǔ
• Hanzi breakdown: 不 = not; 由 = 田 (field) + 丨, meaning from or due to; 自 = self; 主 = 王 (king) + 丶, meaning master or control

Meaning

Involuntarily; can't help oneself; instinctively. Acting without conscious control, driven by emotion or reflex.

Often describes physical reactions (crying, laughing, shivering) or emotional responses that happen automatically. Emphasizes the lack of deliberate choice. Common in describing overwhelming emotions or instinctive behaviors.

Examples

1. 听到那首歌，她不由自主地想起了去世的母亲。 Hearing that song, she couldn't help but think of her late mother.
2. 看到搞笑视频，他不由自主地笑出声来。 Watching the funny video, he couldn't help but laugh out loud.
3. 走进老房子的那一刻，往事不由自主地涌上心头。 The moment he walked into the old house, memories came flooding back involuntarily.

Usage Guide

Context: emotions, reactions, instinct

Tone: descriptive

Do Say

• 她不由自主地流下了眼泪。(She couldn't help but shed tears.)
• 我不由自主地被吸引了。(I was involuntarily drawn in.)

Don't Say

• 我不由自主地决定买这个。(Decisions are deliberate — 不由自主 is for uncontrollable reactions, not choices)

Origin & History

不由 (not from) + 自主 (self-control). Literally 'not from one's own control,' indicating involuntary action.

Cultural Context

Generation: All ages

Social background: Universal