Etymology

sinewy

S1I1N1E1W4Y4

Today it means: Tough; having strong sinews. Full definition →

Middle English synwy
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The story

  1. Middle English · inherited fromsynwy
  2. English todaysinewy

Inherited from Middle English synwy, synewy, synowy (“tendonous”); equivalent to sinew + -y.

Etymology from Wiktionary, CC BY-SA 4.0.