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• s  used of persons; emotionally hardened
  faced a case-hardened judge

• Impatience with job-hunting journalism school graduates comes naturally to many a case-hardened newspaper editor.
• She calls her loverhusband "Preppie" about 900 times too often; she sometimes seems case-hardened enough to scratch a diamond.
• The company's astonishing success is the result of a combination of safety-minded care and case-hardened lawyering.

• hardened
• hard-boiled