Synonyms of sinewy

1 Syllable
lean, hard, firm, tough, strong, leans
2 Syllables
sticker, stringiest, fibroid, gristlier, stalwart, leaner, stringy, tougher, puissant, brawny, tissued, wirier, strongest, leanest, well-built, wiry, muscled, ropy, fibrous, brawnier, toughest, stronger, sturdy, robust, gristly
3 Syllables
robustious, robustuous, athletic, leathery, muscular, sylphlike, vigorous, powerful
4 Syllables
heavy-duty