harden

definition: cause to accept or become hardened to
example:
speech part: verb
synonyms: indurate
definition: make fit
example:
speech part: verb
synonyms: fit
definition: harden by reheating and cooling in oil
example:
speech part: verb
synonyms: temper
definition: become hard or harder
example: The wax hardened
speech part: verb
synonyms: indurate
definition: make hard or harder
example: The cold hardened the butter
speech part: verb
synonyms: indurate

harden is explained and pronounced

How harden is being used?