harden
verb
- 1
cause to accept or become hardened to; habituate
He was inured to the cold
- 2
make fit
This trip will season even the hardiest traveller
- 3
harden by reheating and cooling in oil
temper steel
- 4
become hard or harder
The wax hardened
- 5
make hard or harder
The cold hardened the butter
Also useful for “harden”:Unscrambler— Rearrange the letters in “harden”