1. (a.) Pertaining to, consisting of, or resembling, a sinew or sinews.

2. (a.) Well braced with, or as if with, sinews; nervous; vigorous; strong; firm; tough; as, the sinewy Ajax.

able-bodied acid athletic biting brawny broad-shouldered burly cartilaginous chewy cohesive coriaceous corrosive cutting driving durable effective fibrous forceful forcible gristly gutsy hard hardy imperative impressive incisive lasting leatherlike leathery mighty mordant muscle-bound muscular nervous penetrating piercing poignant powerful punchy resistant robust ropy sensational sinewed slashing stiff stout strapping striking stringy strong stubborn sturdy telling tenacious thewy thickset tough tough as leather trenchant untiring vigorous viscid vital well-built well-knit well-set well-set-up wiry