Pronunciation: /ˈhɑːrdn/
verb to make or become hard or harder
A1 I need to harden the clay before I can sculpt it.
A2 The chocolate will harden once it cools down.
B1 The government is taking steps to harden security at the airport.
B2 The steel needs to be hardened to withstand extreme temperatures.
C1 The coach hardened the team's training regimen in preparation for the championship.
C2 The criminal's heart had hardened after years of committing heinous crimes.
formal The steel was heated to a specific temperature to harden it.
informal You need to harden up and face the reality of the situation.
slang I need to toughen up and harden myself for the challenges ahead.
figurative His heart had hardened over the years, making him less compassionate towards others.
hardened
hardens
harder
hardest
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will harden
has hardened
is hardening
hardens
hard
harden
hardening
hardened