hardens;
hardened;
hardening
hardens;
hardened;
hardening
Britannica Dictionary definition of HARDEN
1
:
to become hard or firm or to make (something) hard or firm
[no object]
[+ object]
2
:
to become more definite and strongly felt or to make (something) more definite and strongly felt
[no object]
[+ object]
3
[+ object]
:
to make (someone) hard
:
to make (someone) less emotional and less likely to feel sorry for other people
4
[no object]
:
to begin to be or seem harsh, angry, serious, etc.
harden your heart
◊ If you harden your heart or if something hardens your heart, you stop having kind or friendly feelings for someone.
— hardener
/ˈhɑɚdnɚ/
noun,
plural
hardeners
[count]
— hardening
noun
[noncount]