The term 'readily flexible' can be summed up by the word 'LIMBER, ' which is a six-letter word. LIMBER is an adjective that describes someone or something that is easily bent or flexed without breaking. It is often used to describe the flexibility of muscles, joints, and limbs. Limberness is important for athletes and dancers, as it allows them to move their bodies in ways that are not possible for those who are not LIMBER. It is also important for everyday activities such as reaching, bending, and stretching.