The word "un-supple" refers to something that is rigid, inflexible, or stiff. Its antonyms are words that describe something that is flexible, agile, pliant, or limber. These words include supple, bendable, elastic, malleable, pliable, adaptable, ductile, resilient, and lithe. Having supple muscles and joints is essential to maintaining good overall health and preventing injuries. Being limber and agile allows us to perform physical activities with ease, whether it's practicing yoga, running, or dancing. By incorporating activities that promote flexibility into our routines, we can increase our range of motion, decrease stiffness and joint pain, and improve our posture and balance.