hardened criminal
hardened heart
hardened steel
hardened attitude
hardened cement paste
hardened concrete
a hardened lava flow.
a case-hardened steel anvil.
the snow hardened and compacted.
was hardened to life on the frontier;
the silos are hardened against air attack.
I hardened my heart against him.
He is becoming hardened to failure.
Doctors are hardened to the sight of blood.
The snow hardened until ice was formed.
Their hands hardened when they worked on the farm.
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