[
UK
/hˈɑːdən/
]
[ US /ˈhɑɹdən/ ]
[ US /ˈhɑɹdən/ ]
Synonyms
To become less permeable
set
close
firm
contract
cake
settle
fix
clot
stiffen
thicken
curdle
solidify
congeal
petrify
coagulate
jell
also freeze
freeze over
ossify
fossilize
become dense
become fast
To make less penetrable
fire
press
sun
dry
steel
concentrate
concrete
deposit
compact
cure
temper
freeze
cement
bake
consolidate
candy
precipitate
callous
flatten
starch
crystallize
amalgamate
toughen
indurate
anneal
inspissate
make firm
also compress
granulate
encrust
desiccate
vitrify
mineralize
hornify
cornify
make callous
make compact
make tight
make hard
convert to stone
braze
vulcanize
Harveyize
incrassate
lapidify
Quiz
Words Related To harden