前人未発

ぜんじんみはつ

noun

•

unprecedented, unheard-of, never propounded (discovered, invented) by anyone before(yojijukugo)

前	in front, before
人	person
未	un-, not yet, hitherto, still, even now, sign of the ram, 1-3PM, eighth sign of Chinese zodiac
発	departure, discharge, publish, emit, start from, disclose, counter for gunshots