lissomeness, litheness, suppleness -- (the gracefulness of a person or animal that is flexible and supple)
pliancy, pliantness, suppleness -- (the property of being pliant and flexible)
pliability, pliancy, pliantness, suppleness -- (adaptability of mind or character; "he was valued for his reliability and pliability"; "he increased the leanness and suppleness of the organization")