[ noun ] an expressive style that uses excessive or empty words <noun.communication>
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.