1. (v. t.) To lament; to regret extremely; to grieve over; as to rue the day...\.

2. (n.) A perennial suffrutescent plant (Ruta graveolens), having a strong, heavy odor and a bitter taste; herb of grace. It is used in medicine.

3. (n.) Fig.: Bitterness; disappointment; grief; regret.

4. (v. t.) To cause to grieve; to afflict.

5. (v. t.) To repent of, and withdraw from, as a bargain; to get released from.

6. (v. i.) To have compassion.

7. (v. i.) To feel sorrow and regret; to repent.

8. (v. t.) Sorrow; repentance.

affliction anguish be sorry for bemoan bewail care commiseration compassion compunction contriteness contrition deplore dole grief heartache heartbreak penance penitently regret remorse remorsefulness repent repentance repine rue the day ruth sympathy woe