'Bitterly' in the Bible

When Esau realized what his father Isaac was saying, he began to wail out loud bitterly. "Bless me," he cried, "even me, too, my father!"

Then Esau implored his father, "Don't you have even one blessing for me, my father? Bless me, even me too, my father!" Then Esau lifted his voice and wept bitterly.