Antonyms of adj repentant

1 sense of repentant

Sense 1
penitent (vs. impenitent), repentant (vs. unrepentant) -- (feeling or expressing remorse for misdeeds)

impenitent (vs. penitent), unrepentant (vs. repentant), unremorseful -- (not penitent or remorseful)

Similarity of adj repentant

1 sense of repentant

Sense 1
penitent (vs. impenitent), repentant (vs. unrepentant) -- (feeling or expressing remorse for misdeeds)
       => contrite, remorseful, rueful, ruthful -- (feeling or expressing pain or sorrow for sins or offenses)
       => penitential, penitentiary -- (showing or constituting penance; "penitential tears"; "wrote a penitential letter apologizing for her hasty words")
          Also See-> ashamed#1; regretful#1, sorry#1, bad#5