Easily resuming original shape after being stretched or expanded; flexible. See Synonyms at flexible. Springy; rebounding. Physics Returning to or capable of returning to an initial form or state after deformation. Quick to recover, as from disappointment: an elastic spirit. Capable of adapting to change or a variety of circumstances. A flexible stretchable fabric made with interwoven strands of rubber or an imitative synthetic fiber. An object made of this fabric. A rubber band.