RichThesaurus
ferrous
ferrous
synonyms
ferric
iron
unbending
heavy
obdurate
implacable
irony
inexorable
dense
insensible
firm
cruel
unyielding
indomitable
immovable
robust
adamant
strong
steel
rigid
stubborn
made of iron
relentless
adamantine
thick
steely
ferriferous
ironlike
cast iron
chalybeate
steelen
stiff
clear
stout
hard
hefty
rough
solid
lead
staunch
blunt
set
salt
indurate
chill
fit
rugged
round
strong-handed
tough
more synonyms
ferrous
antonyms
flexible
soft
weak