the child's misery would move even the most obdurate heart.
Examples of obdurate
obdurate
Germany, where service in shops is often dire, has been particularly obdurate.
From the economist.com
As for the Republicans, they have been as obdurate as Mr Obama was feckless.
From the economist.com
This is a PR disaster for Sky, making them appear heavy-handed and obdurate.
From the nbr.co.nz
He took ten years to come to terms with a very obdurate and highly original painter.
From the economist.com
Despite his two-state utterance, Mr Netanyahu sounds as obdurate as ever.
From the economist.com
All efforts to redirect Mugabe away from imminent chaos have fallen on very obdurate ears.
From the guardian.co.uk
Iran has remained obdurate on the key issue of nuclear development.
From the washingtontimes.com
Obdurate, unredeemable, the leaders of Hamas can now rely on Morsi as their new best friend.
From the sfgate.com
What's starting to crack isn't the obdurate Bush, but the country.
From the washingtonpost.com
More examples
Cussed: stubbornly persistent in wrongdoing
Flinty: showing unfeeling resistance to tender feelings; "his flinty gaze"; "the child's misery would move even the most obdurate heart"
(obdurately) stubbornly: in a stubborn unregenerate manner; "she remained stubbornly in the same position"
(obduracy) adamance: resoluteness by virtue of being unyielding and inflexible
(obduration) A hardening of the heart; hardness of heart
(obduracy) noun - 1. the quality of not easily being moved to pity or sympathy; heardheartedness 2. hardness; unrepentiveness 3. the quality of being obstinate or not quick to give in; stubbornness; inflexibility
(Obduration) a, blind side, cussedness, dogged resolution, hardness, immovability, inflexibility, obduracy, obstinacy, obstinateness, old school, perseverance, resolution, ruling passion, tenacity.
(adj.) unyielding to persuasion or moral influences (The obdurate old man refused to take pity on the kittens.)
(adj) - stubborn (person), physically hard or resistant (thing)