Verb

• S: (v) harden, indurate (become hard or harder) "The wax hardened"
• S: (v) harden, indurate (make hard or harder) "The cold hardened the butter"
• S: (v) temper, harden (harden by reheating and cooling in oil) "temper steel"
• direct hypernym / inherited hypernym / sister term
• S: (v) modify (make less severe or harsh or extreme) "please modify this letter to make it more polite"; "he modified his views on same-gender marriage"
• derivationally related form
• sentence frame
• S: (v) season, harden (make fit) "This trip will season even the hardiest traveller"
• S: (v) inure, harden, indurate (cause to accept or become hardened to; habituate) "He was inured to the cold"