HARDEN

Definition:

1. [verb] become hard or harder; "The wax hardened"
   Synonyms: indurate
   
   
2. [verb] make hard or harder; "The cold hardened the butter"
   Synonyms: indurate
   
   
3. [verb] harden by reheating and cooling in oil; "temper steel"
   Synonyms: temper
   
   
4. [verb] make fit; "This trip will season even the hardiest traveller"
   Synonyms: season
   
   
5. [verb] cause to accept or become hardened to; habituate; "He was inured to the cold"
   Synonyms: inure, indurate
   
   

Synonyms:

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Related Words:

• encrust, incrust
• callus
• calcify
• cure
• face-harden
• callus
• callous, cauterize, cauterise
• steel oneself against, steel onself for, brace oneself for, prepare for