Rue

Definition:

(n.) A perennial suffrutescent plant (Ruta graveolens), having a strong, heavy odor and a bitter taste; herb of grace. It is used in medicine.
(n.) Fig.: Bitterness; disappointment; grief; regret.
(v. t.) To lament; to regret extremely; to grieve for or over.
(v. t.) To cause to grieve; to afflict.
(v. t.) To repent of, and withdraw from, as a bargain; to get released from.
(v. i.) To have compassion.
(v. i.) To feel sorrow and regret; to repent.
(v. t.) Sorrow; repetance.

Compare rue with other words:

retrospect vs. rue

chagrin vs. rue

deplore vs. rue

rejoice vs. rue

perennial vs. rue

compassion vs. rue

repentance vs. rue