1 to regret

2 to repent

1 to commit a crime

2 crime

3 offense

1 guilt

2 crime

3 fault

4 blame

5 sin

1 sin

2 offense

1 to renege

2 to go back (on a deal)

3 to back out (of a promise)

1 sb condemned by history (idiom)

1 to console the people by punishing the tyrants (idiom)

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

1 to regret one's past deeds (idiom)

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