strong
tough
able-bodied
acid
athletic
biting
brawny
broad-shouldered
burly
cartilaginous
chewy
cohesive
coriaceous
corrosive
cutting
driving
durable
effective
fibrous
firm
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
agile
bronzed
gnarled
hairy
lithe
scaly
shapely
skinny
slim
stalwart
well-knit
well-made
well-muscled
well-proportioned
wiry