blather

from WordNet (r) 3.0 (2006)

blather
    n 1: foolish gibberish [syn: {blather}, {blatherskite}]
    v 1: to talk foolishly; "The two women babbled and crooned at
         the baby" [syn: {babble}, {blather}, {smatter}, {blether},
         {blither}]

from The Collaborative International Dictionary of English v.0.48

Blather \Blath"er\ (bl[a^][th]"[~e]r), v. i. & t. [imp. & p. p.
   {Blathered}; p. pr. & vb. n. {Blathering}.] [Written also
   {blether}.] [Icel. bla[eth]ra. Cf. {Blatherskite}.]
   To talk foolishly, or nonsensically, or concerning matters of
   no consequence. --G. Eliot.

   Syn: babble, smatter, blether, blither.
        [Webster 1913 Suppl. + WordNet 1.5]

from The Collaborative International Dictionary of English v.0.48

Blather \Blath"er\, n. [Written also {blether}.]
   Voluble, foolish, or nonsensical talk; -- often in the pl.
   --Hall Caine.
   [Webster 1913 Suppl.]

from Moby Thesaurus II by Grady Ward, 1.0

117 Moby Thesaurus words for "blather":
      absurdity, amphigory, babble, babblement, balderdash, bavardage,
      be stupid, bibble-babble, blab, blabber, blah-blah, blatherskite,
      blether, blethers, blither, bombast, bosh, bull, bullshit, bunkum,
      burble, cackle, caquet, caqueterie, chat, chatter, chitter-chatter,
      clack, claptrap, clatter, dither, dote, double-talk, drivel, drool,
      fiddle-faddle, fiddledeedee, flapdoodle, flimflam, flummery,
      folderol, fudge, fustian, gab, gabble, galimatias, gammon, gas,
      gibber, gibberish, gibble-gabble, go on, gobbledygook, gossip,
      guff, gush, haver, hocus-pocus, hokum, hot air, humbug, idle talk,
      jabber, jargon, jaw, jazz, malarkey, maunder, mere talk,
      mumbo jumbo, narrishkeit, natter, niaiserie, nonsense,
      nonsense talk, pack of nonsense, palaver, patter, piffle,
      poppycock, pour forth, prate, prating, prattle, prittle-prattle,
      ramble on, rant, rattle, rattle on, reel off, rigamarole,
      rigmarole, rodomontade, rubbish, run on, skimble-skamble, slobber,
      spout, spout off, stuff and nonsense, stultiloquence, talk away,
      talk nonsense, talk on, talkee-talkee, tittle-tattle, trash,
      trumpery, twaddle, twattle, twiddle-twaddle, vapor, vaporing,
      waffle, waffling, yak, yakkety-yak