uncontrite

hardened obdurate remorseless

avaricious barbarous bloody callous cruel fierce forbidding greedy grim hard hard-bitten hard-hearted hardened harsh impenitent implacable inexorable inhuman inhumane insensitive intolerant merciless murderous obdurate pitiless relentless rigorous ruthless sanguinary savage shameless sour tough tyrannical uncompassionate unforgiving unmerciful unregenerate unrelenting unremitting unrepenting unyielding vindictive

ashamed guilty remorseful sad sorry