'Regretted' in the Bible

Although the king regretted it, he commanded that it be granted because of his oaths and his guests.

The man came to the second and said the same thing; and he answered, ‘I will, sir’; but he did not go.

Then Judas, who had betrayed him, regretted what had happened when he saw that Jesus was condemned. He brought the 30 pieces of silver back to the high priests and elders,

For if also I grieved you in the letter, I do not regret it, if even I have regretted it; for I see that that letter, if even it were only for a time, grieved you.

For godly grief produces a repentance not to be regretted and leading to salvation, but worldly grief produces death.