What is an antonym for the word penitent?

Here are some antonyms for "penitent," depending on the specific context:

General Antonyms:

* Unapologetic

* Remorseless

* Unrepentant

* Impenitent

* Callous

* Indifferent

* Arrogant

Antonyms Emphasizing Pride:

* Proud

* Haughty

* Self-righteous

* Conceited

Antonyms Emphasizing Lack of Regret:

* Insolent

* Defiant

* Obstinate

* Unashamed

The best antonym will depend on the specific situation and the meaning you want to convey.