硬

firm, vigorous, unbending, unyielding, strong, stubborn

hard, solid, tough, stiff, tight, wooden, unpolished (e.g. writing), strong, firm (not viscous or easily moved), safe, steady, honest, steadfast, obstinate, stubborn, bookish, formal, stuffy

tough elements, hard-liners, stalwarts, diehards, hawks, considering association with women and interest in fashion as weakness and focusing on strength and manliness, young tough, young rowdy, hard (news), hard news reporter, strait-laced (person), straight-laced, overly serious regarding relations between men and women, bullish traders

stiffening, rigidity, rigor, stiffness, ossification, petrification

hardening, vulcanization, vulcanisation, sclerosis, curing

coin, hard currency

cirrhosis of the liver

arteriosclerosis, hardening of the arteries

firmness, hardness, stiffness, honesty

hardball (tennis, baseball)