'Bitter' in the Bible

And she cometh in unto the man of God, unto the hill, and layeth hold on his feet, and Gehazi cometh nigh to thrust her away, and the man of God saith, 'Let her alone, for her soul is bitter to her, and Jehovah hath hidden it from me, and hath not declared it to me.'

For the LORD saw the affliction of Israel, that it was very bitter: for there was not any shut up, nor any left, nor any helper for Israel.

Against whom have you said evil and bitter things? against whom has your voice been loud and your eyes lifted up? even against the Holy One of Israel.

O Lord, keep in mind how I have been true to you with all my heart, and have done what is good in your eyes. And Hezekiah gave way to bitter weeping.