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1. Feel remorse for; feel sorry for; be contrite about
   - repent, rue
    
2. Feel sad about the loss or absence of
    
3. Decline formally or politely
   "I regret I can't come to the party"
    
4. Express with regret
   "I regret to say that you did not gain admission to Harvard"

1. Sadness associated with some wrong done or some disappointment
   "he wrote a note expressing his regret";
   - sorrow, rue [archaic], ruefulness

Derived forms: regretted, regrets, regretting

Type of: decline, experience, feel, inform, miss, refuse, sadness, unhappiness

Encyclopedia: Regret, Tennessee