8.3.6.2 Hard, firm
Use this domain for words that describe something that is hard--not easily cut, or broken.
English
What words describe something that is hard?
hard, adamant, firm, indurate, petrified, concrete, tough
What words refer to something becoming hard?
harden, set, stiffen up
What words refer to making something hard?
harden, firm up, petrify, stiffen, toughen