不得而知

• 拼音: bù dé ér zhī
• 汉字拆解: 不 = not; 得 = to obtain; 而 = connective particle; 知 = 矢 (arrow) + 口 (mouth), meaning to know

含义

Unable to know; impossible to find out; no way of knowing.

Used when information is unavailable or unknowable. Often appears in formal writing, journalism, or historical narratives to acknowledge gaps in knowledge. Implies that despite wanting to know, the information cannot be obtained.

例句

1. 他离职的真正原因不得而知，公司方面没有任何解释。
2. 这座古墓的主人究竟是谁，至今仍不得而知。
3. 谈判的具体内容不得而知，双方都签署了保密协议。

用法指南

语境: journalism, historical, mystery

语气: neutral

正确说法

• 事情的真相不得而知。(The truth of the matter is impossible to know.)
• 他的下落至今不得而知。(His whereabouts remain unknown to this day.)

错误说法

• 这道题的答案不得而知。(For a solvable problem, use 不知道 — 不得而知 implies the information is fundamentally unavailable)

起源与历史

不得 (cannot obtain) + 而 (and thus) + 知 (know). A classical construction meaning 'cannot thereby know.'

文化背景

世代: All ages

社会背景: Educated