Japanese meaning of 前代未聞

Reading:
ぜんだいみもん (zendai mimon)

English Translation:

Unprecedented / Never before seen

Meaning & Cultural Context

Meaning:


An event or phenomenon so rare and extraordinary that it is completely without precedent. This phrase emphasizes astonishment and the uniqueness of the occurrence.

Cultural Context:


Frequently used in journalism, law, and commentary to highlight unprecedented events.

Grammar & Learning Points

Grammar Point

• Noun phrase with “の〜” to modify events (“前代未聞の事件”).

Trap for English Speakers

May be overused for minor events, diluting its strong meaning of “never before seen.”

Example

Basic Example

こんな事件は前代未聞だ。

This kind of incident is unprecedented.


Applied Example

決勝戦が無観客で行われるのは前代未聞だ。

Holding the finals without spectators was unprecedented.