Sorrow (emotion) definition

(1) Something that causes great unhappiness

"Her death was a great grief to John"

(2) An emotion of great sadness associated with loss or bereavement

"He tried to express his sorrow at her loss"

(3) Sadness associated with some wrong done or some disappointment

"He drank to drown his sorrows"

"He wrote a note expressing his regret"

"To his rue, the error cost him the game"

(4) The state of being sad

"She tired of his perpetual sadness"

(5) Feel grief; eat one's heart out