regret

Noun

• 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
    

Verb

• express with regret
  • I regret to say that you did not gain admission to Harvard
    

• decline formally or politely
  • I regret I can't come to the party
    

• feel sad about the loss or absence of

• feel remorse for; feel sorry for; be contrite about

Related words

• Synonyms: 
  sorrow , rue , ruefulness , repent