Repentant /(-ant)/

Re·pent·ant

Repentant

a.
  1. Penitent; sorry for sin.
    Thus they, in lowliest plight, repentant stood.
    — Millton.
  2. Expressing or showing sorrow for sin; as, repentant tears; repentant ashes.

Repentant

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