WordWeb Online

1. Become hard or harder
   "The wax hardened"
   - indurate
    
2. Make hard or harder
   "The cold hardened the butter"
   - indurate
    
3. Harden by reheating and cooling in oil
   - temper
    
4. Make fit
   - season
    
5. Cause to accept or become hardened to; habituate
   - inure, indurate, enure

Derived forms: hardening, hardens, hardened

See also: hardening

Type of: accustom, change, habituate, modify, toughen

Antonym: soften

Encyclopedia: Harden, New South Wales Harden, Australia Harden Harden, West Yorkshire Harden, West Midlands Harden, Walsall