Feeling or evincing no regret for one’s wrongdoings; impenitent. Now also more generally: not sorry for any action or behaviour, unapologetic.

(un-, prefix1 affix 1.)

(un-, prefix1 affix 6 affix 4.)

Not penitent; unrepentant.

Not penitent or repentant; having no contrition or sorrow for sin; unrepentant, obdurate.

That does not repent; = unrepentant, adj.

Not repentant; impenitent.

Not remorseful; lacking feelings of guilt or regret. Formerly also: †merciless, unforgiving, lacking pity or compassion (obsolete).

(un-, prefix1 affix 2.)

Unrepentant.

Devoid of compunction; remorseless.

(un-, prefix1 affix 1.)