Synonyms and related words :
able to adapt, adaptable, adaptive, adjustable, airy, alterable, alterative, bouncing, bouncy, bounding, breezy, buoyant, carefree, changeable, checkered, convalescent, corky, debonair, effervescent, elastic, ever-changing, expansive, extensile, flexible, flexile, fluid, free and easy, impermanent, jaunty, kaleidoscopic, light, lighthearted, lightsome, lively, malleable, many-sided, metamorphic, mobile, modifiable, movable, mutable, nonuniform, perky, permutable, plastic, protean, proteiform, rebounding, recalcitrant, recoiling, recuperative, recuperatory, repercussive, responsive, reviviscent, rubbery, springing, springy, stretch, stretchable, stretchy, supple, transient, transitory, variable, volatile, whippy