Source : Webster's Revised Unabridged Dictionary (1913)

Flexibility \Flex`i*bil"i*ty\, n. [L. flexibilitas: cf. F.
   flexibilite.]
   The state or quality of being flexible; flexibleness;
   pliancy; pliability; as, the flexibility of strips of
   hemlock, hickory, whalebone or metal, or of rays of light.
   --Sir I. Newton.

         All the flexibility of a veteran courtier. --Macaulay.

Source : WordNet®

flexibility
     n 1: the property of being flexible [syn: {flexibleness}] [ant: {inflexibility}]
     2: the quality of being adaptable or variable; "he enjoyed the
        flexibility of his working arrangement" [ant: {inflexibility}]
     3: the trait of being easily persuaded [syn: {tractability}, {tractableness}]
        [ant: {intractability}]