#1 regret v. [repent, rue] feel remorse for; feel sorry for; be contrite about. wn
#2 regret n. [sorrow, rue, ruefulness] 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". wn
#3 regret v. feel sad about the loss or absence of. wn
#4 regret v. decline formally or politely; "I regret I can't come to the party". wn
#5 regret v. express with regret; "I regret to say that you did not gain admission to Harvard". wn
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