flexible

elastic, resilient, springy, flexible, supple mean able to endure strain without being permanently injured. elastic implies the property of resisting deformation by stretching <an elastic waistband>. resilient implies the ability to recover shape quickly when the deforming force or pressure is removed <a resilient innersole>. springy stresses both the ease with which something yields to pressure and the quickness of its return to original shape <the cake is done when the top is springy>. flexible applies to something which may or may not be resilient or elastic but which can be bent or folded without breaking <flexible plastic tubing>. supple applies to something that can be readily bent, twisted, or folded without any sign of injury <supple leather>.

The Latin word flectere, meaning “to bend” or “to curve,” and its form flexus give us the roots flect and flex. Words from the Latin flectere have something to do with bending or curving. To flex is to cause something, such as a muscle, to curve or bend. Something flexible can be bent without breaking. To deflect, or turn aside, is to bend the direction of something. To reflect is to bend an image back to the person looking at a mirror or other shiny surface.