repentant

re-pen-tant

adjective

Feeling or expressing sincere regret for one's past wrongdoing or sins.

"She gave a repentant look after her outburst."

Thesaurus

Synonyms: penitent, rueful, penitential, ruthful, penitentiary, remorseful, contrite

Antonyms: impenitent, unremorseful, unrepentant