unrepenting

coldhearted seasoned

accustomed benumbed callous habituated indurated inured prepared steeled toughened unbending

case-hardened contemptuous cruel disdainful hard as nails hard-bitten hard-boiled hardhearted heartless impenetrable impious inaccessible irreverent obdurate obtuse resistant unashamed uncaring uncompassionate unemotional unsubmissive

compassionate feeling kind nice sympathetic

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 uncontrite unforgiving unmerciful unregenerate unrelenting unremitting unyielding vindictive

ashamed guilty remorseful sad sorry