Clearing one's name; redeeming oneself or restoring one's honor after disgrace (yojijukugo).
彼は無実が証明され、ようやく汚名返上した。
His innocence was proven, and he finally cleared his name.
チームは連敗続きで汚名返上のチャンスを待っている。
The team, after a string of losses, is waiting for a chance to redeem itself.
汚名返上のために選手は必死で練習した。
The player trained desperately to redeem his reputation.
監督は一勝で汚名返上を宣言した。
The coach declared that a single victory would restore their honor.