Case-hardened

adj

Definitions

Adjective
  1. 1
    Of metal: harder at its surface, due to a case hardening process.
  2. 2
    Hardened by experience. broadly, figuratively

    "Even a case-hardened monorailist must blench at the thought of the storm such a proposition would create."

Adjective
  1. 1
    used of persons; emotionally hardened wordnet

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