hardened
     adj 1: used of persons; emotionally hardened; "faced a
            case-hardened judge" [syn: {case-hardened}, {hard-boiled}]
     2: made hard or flexible or resilient especially by heat
        treatment; "a sword of tempered steel"; "tempered glass"
        [syn: {tempered}, {treated}, {toughened}] [ant: {untempered}]
     3: made tough by habitual exposure; "hardened fishermen"; "a
        peasant, dark, lean-faced, wind-inured"- Robert Lynd; "our
        successors...may be graver, more inured and equable men"-
        V.S.Pritchett [syn: {enured}, {inured}]
     4: converted to solid form (as concrete) [syn: {set}]
Source: WordNet® 2.0