sinews

Noun

a cord or band of inelastic tissue connecting a muscle with its bony attachment
possessing muscular strength
plural of sinew

Synonyms

brawn, brawniness, heftiness, muscle, muscularity, sinew, tendon

Scrabble Score: 9

sinews: valid Scrabble (US) TWL Word
sinews: valid Scrabble Word in Merriam-Webster MW Dictionary
sinews: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 10

sinews: valid Words With Friends Word