Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)
Use "iron-hearted" in a sentence
"“Look on me,” said the captive, “and rejoice that thou canst yet see the wretched condition to which iron-hearted tyranny can reduce a fellow-creature, both in mortal existence and in future hope.”"
"If you don't want to face this kind of thing routinely, the only way to proceed is to become iron-hearted - you must give the hostages up for dead, and then do everything in your power to kill both the hostage takers and their masters, and to ensure that they get NOTHING good out of their crime and EVERYTHING bad you can pile on them."
"The country's iron-hearted Prison Service claimed Khodorkovsky suffered "a scratch on his nose" while quarreling with a fellow convict."