Having the surface hardened, as iron tools. Hardened against, or insusceptible to, good influences; rendered callous by persistence in wrongdoing or resistance of good influences; -- said of persons.
Vogais: aeaee
Consoantes: cshrdnd
case-hardened, credenda, caretuned, carotenoid, credent, coordinated, co-ordinated, cigarette end, cordonnet, corrodent.