The Collaborative International Dictionary of English v.0.48:

Verbose \Ver*bose"\, a. [L. verbosus, from verbum a word. See
   Verb.]
   Abounding in words; using or containing more words than are
   necessary; tedious by a multiplicity of words; prolix; wordy;
   as, a verbose speaker; a verbose argument.
   [1913 Webster]

         Too verbose in their way of speaking.    --Ayliffe.
   [1913 Webster] -- Ver*bose"ly, adv. -- Ver*bose"ness, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

verbose
    adj 1: using or containing too many words; "long-winded (or
           windy) speakers"; "verbose and ineffective instructional
           methods"; "newspapers of the day printed long wordy
           editorials"; "proceedings were delayed by wordy disputes"
           [syn: long-winded, tedious, verbose, windy,
           wordy]

Moby Thesaurus II by Grady Ward, 1.0:

71 Moby Thesaurus words for "verbose":
   all jaw, candid, chatty, circumlocutory, communicative,
   conversational, de longue haleine, de trop, diffuse, dispensable,
   effusive, endless, excess, expansive, expendable, expletive,
   extended, filled out, flip, flowery, fluent, frank, gabby,
   garrulous, gassy, glib, gossipy, grandiloquent, gratuitous,
   gregarious, gushy, in excess, lengthy, long, long-drawn-out,
   long-spun, long-winded, longiloquent, loquacious, magniloquent,
   multiloquent, multiloquious, needless, newsy, nonessential,
   overtalkative, padded, periphrastic, pleonastic, prolix,
   protracted, redundant, smooth, sociable, spare, spun-out,
   supererogatory, superfluous, talkative, talky, tautologic,
   tautologous, to spare, uncalled-for, unessential, unnecessary,
   unneeded, unrelenting, voluble, windy, wordy