unprecedented; unheard-of; record-breaking
un-, not yet, hitherto, still, even now, sign of the ram, 1-3PM, eighth sign of Chinese zodiac
ミ / いま.だ
once, before, formerly, ever, never, ex-
ソウ / かつ.て
possess, have, exist, happen, occur, approx
ユウ / あ.る