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