后悔

to regret / to repent

to regret; to feel remorse

empress / queen / (archaic) monarch / ruler

back / behind / rear / afterwards / after / later / post-

to regret

(bound form) to regret; to repent

too late for regrets (idiom); It is useless to repent after the event.

(fig.) to regret (doing sth)

too late for regrets