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Use "unremorseful" in a sentence
"John McCain, an unremorseful war criminal, flew some of those missions."
"To do that, I'd go back in time and surgically attempt to find and piece together what was lost and why this once loving couple had morphed into unremorseful enemies."
"Brown has been pictured gallivanting around the country, seemingly unremorseful, not hiding out to contemplate his decisions and actions."