未聞
み
も
ん
Meanings
1
unheard; unprecedented
Rarely used independently; almost always appears in the set phrase 前代未聞 (ぜんだいみもん), meaning 'unprecedented' or 'unheard of in history'.
See also: 前代未聞
It is used in the phrase 前代未聞.
That incident was truly an unprecedented catastrophe.