Use 'sinewy' to create a vivid image of physical strength and agility. The acrobat displayed his sinewy form as he flew through the air.
Pro Tip 2/3
Not Bulky
'Sinewy' suggests strength without bulkiness, think of lean muscles. Despite being slim, her sinewy arms allowed her to win the arm-wrestling match.
Pro Tip 3/3
Positive Connotation
While it describes leanness, 'sinewy' has a positive connotation of health and fitness. The runner's sinewy legs powered him up the steep hill effortlessly.