Able to be pulled or extended without tearing, and able to return to its original shape afterward.
From 'stretch,' which comes from Old English and Old Norse. The informal '-y' suffix was added to create an adjective describing the quality or characteristic of being able to stretch.
Stretchy fabrics like spandex revolutionized clothing in the 1960s — they let people move freely in athletic wear and fashion, which is why yoga pants became a thing and why you almost never see truly stiff clothing anymore.
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