'Bitterly' in the Bible
Curse ye Meroz, said the angel of the LORD, curse ye bitterly the inhabitants thereof; because they came not to the help of the LORD, to the help of the LORD against the mighty.
And she said unto them, Call me not Naomi, call me Mara: for the Almighty hath dealt very bitterly with me.
Therefore said I, Look away from me; I will weep bitterly, labour not to comfort me, because of the spoiling of the daughter of my people.
Behold, their valiant ones shall cry without: the ambassadors of peace shall weep bitterly.
And shall cause their voice to be heard against thee, and shall cry bitterly, and shall cast up dust upon their heads, they shall wallow themselves in the ashes:
Ephraim provoked him to anger most bitterly: therefore shall he leave his blood upon him, and his reproach shall his Lord return unto him.
The great day of the LORD is near, it is near, and hasteth greatly, even the voice of the day of the LORD: the mighty man shall cry there bitterly.
And Peter remembered the word of Jesus, which said unto him, Before the cock crow, thou shalt deny me thrice. And he went out, and wept bitterly.