case-hardened
AdjectiveWordNet 3.0
Adjective (1)
- used of persons; emotionally hardened“faced a case-hardened judge”Synonyms: hardenedhard-boiled
Webster's Dictionary (GCIDE)
Casehardened \Case"hard`ened\, a.
1.Having the surface hardened, as iron tools. [1913 Webster]
2.Hardened against, or insusceptible to, good influences; rendered callous by persistence in wrongdoing or resistance of good influences; -- said of persons. [1913 Webster]