sorrow sorrow /ˈsɑːroʊ/

noun

1. () An emotion of great sadness associated with loss or bereavement  ( sorrow )
   an emotion of great sadness associated with loss or bereavement
    He tried to express his sorrow at her loss
   he tried to express his sorrow at her loss
   
2. () Something that causes great unhappiness  ( grief , sorrow )
   something that causes great unhappiness
    Her death was a great grief to John
   her death was a great grief to John
   
   
3. () Sadness associated with some wrong done or some disappointment  ( rue [Archaic] , ruefulness , sorrow , regret )
   sadness associated with some wrong done or some disappointment
    He drank to drown his sorrows
   he drank to drown his sorrows
    He wrote a note expressing his regret
   he wrote a note expressing his regret
    To his rue, the error cost him the game
   to his rue, the error cost him the game
   
   
4. The state of being sad  ( sadness , sorrow , sorrowfulness , tristesse )
   the state of being sad
    She tired of his perpetual sadness
   she tired of his perpetual sadness
   
   

verb

1. Feel grief  ( sorrow , grieve )
   feel grief