hardening; vulcanization; hardening (of attitude, stance, etc.); stiffening; upturn (in the market); firming up
hard-liners; diehards; (young) man with traditionally masculine interests; tough boy; hard news; reporter who covers political and economic affairs
bone; firm; uncompromising
stiffening; rigidity; rigor; stiffness; ossification; petrification
firm; strong; unbending; unyielding; uncompromising; stubborn
cemented carbide; superhard; ultrahard
hard ball; regulation ball
hardness and softness; hard line and moderate line
crude; immature; unpolished
hard (esp. of hardball, tennis, etc.)
train ticket printed on thick paper
high-contrast (photography); hard tone; bullish (market); firm
sclerophyll forest; sclerophyllous forest; hardwood forest