不为人知

• Pinyin: bù wéi rén zhī
• Hanzi breakdown: 不 = not; 为 = to be (passive marker); 人 = person; 知 = 矢 (arrow) + 口 (mouth), meaning to know

Meaning

Unknown to others; little-known; not publicly known. Something that remains hidden from public awareness.

Often used to describe secrets, hidden aspects, or behind-the-scenes stories. Can refer to personal histories, industry secrets, or overlooked facts. Frequently appears in journalism and biographical contexts.

Examples

1. 每个光鲜亮丽的成功背后，都有不为人知的艰辛。 Behind every glamorous success story lie hardships unknown to others.
2. 这位企业家有很多不为人知的慈善行为。 This entrepreneur has done a lot of charitable work that remains unknown to the public.
3. 这个古老村落里，藏着许多不为人知的历史故事。 This ancient village holds many historical stories that few people know about.

Usage Guide

Context: secrets, hidden stories, revelations

Tone: mysterious

Do Say

• 他有很多不为人知的一面。(He has many sides unknown to others.)
• 这段历史长期不为人知。(This piece of history remained unknown for a long time.)

Don't Say

• 这道题的答案不为人知。(For things people simply haven't figured out, use 没人知道 — 不为人知 implies something deliberately hidden or overlooked)

Origin & History

不为 (not by) + 人 (people) + 知 (to know). A classical construction meaning 'not known by people.'

Cultural Context

Generation: All ages

Social background: Universal