harden meaning and definition

HARDEN verb

Definition of harden (verb)

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