'Bitterly' in the Bible

Her rival, however, would provoke her bitterly to irritate her, because the Lord had closed her womb.

Deeply distressed, she prayed to the LORD and wept bitterly.

And all Israel had the news that Saul had made an attack on the Philistines, and that Israel was bitterly hated by the Philistines. And the people came together after Saul to Gilgal.

Then Samuel said to Saul, “Why have you disturbed me by bringing me up?” Saul answered, “I am greatly distressed; for the Philistines are making war against me, and God has left me and no longer answers me, either through prophets or by dreams; therefore I have called you to make known to me what I should do.”

David was very upset, for the men were thinking of stoning him; each man grieved bitterly over his sons and daughters. But David drew strength from the Lord his God.