Noun, Noun which may take the genitive case particle 'no'
unheard-of; unprecedented; unparalleled in history (unparallelled); record-breaking
Yojijukugo (four character compound)
犯人を弁護してた弁護士が実は真犯人だったなんて、前代未聞だ。It's totally without precedent for the suspect's attorney to be the true culprit.
1 result for 前代未聞