Meaning : Used of persons. Emotionally hardened.
Example :
Faced a case-hardened judge.
Synonyms : case-hardened, hard-boiled
Meaning : Made hard or flexible or resilient especially by heat treatment.
Example :
A sword of tempered steel.
Tempered glass.
Synonyms : tempered, toughened, treated
Not brought to a proper consistency or hardness.
Untempered mortar.Meaning : Protected against attack (especially by nuclear weapons).
Example :
Hardened missile silos.
Meaning : Converted to solid form (as concrete).
Synonyms : set