Source : Webster's Revised Unabridged Dictionary (1913)

Verbosity \Ver*bos"i*ty\, n.; pl. {Verbosities}. [L. verbositas:
   cf. F. verbosit['e].]
   The quality or state of being verbose; the use of more words
   than are necessary; prolixity; wordiness; verbiage.

         The worst fault, by far, is the extreme diffuseness and
         verbosity of his style.                  --Jeffrey.

Source : WordNet®

verbosity
     n : an expressive style that uses excessive words [syn: {verboseness}]
         [ant: {terseness}]