/ Dictionary / Index S sinewy: Meaning and Definition of Find definitions for: sin•ew•y Pronunciation: (sin'y-ē), [key] — adj. having strong sinews: a sinewy back. of or like sinews; tough, firm, braided, or resilient: a sinewy rope. having conspicuous sinews; stringy: tough, sinewy meat. vigorous or forceful, as language, style, etc.: a sinewy argument. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sinewy (Thesaurus) sine wave Sinfjotli Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language