Webster's Revised Unabridged Dictionary · 1913

Repentant

Repentant (-ant) , adjective

[French repentant.]

1.
Penitent; sorry for sin. — Chaucer
Thus they, in lowliest plight, repentant stood. — Millton
2.
Expressing or showing sorrow for sin; as, repentant tears; repentant ashes.
Repentant sighs and voluntary pains. — Pope

Repentant , noun

One who repents, especially one who repents of sin; a penitent.