Synonyms of 'unrepentant'
She was unrepentant about her strong language and abrasive remarks.
Farewell, remorse! All good to me is lost; Evil, be thou my good– Paradise Lost]
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A callous person or action is very cruel and shows no concern for other people or their feelings.
a callous and brutal attack on an old man
Thesaurus for unrepentant from the Collins English Thesaurus
If you are unrepentant , you are not ashamed of your beliefs or actions.