— blatherer , n.
/bladh"euhr/ , n.
1. foolish, voluble talk: His speech was full of the most amazing blather.
v.i. , v.t.
2. to talk or utter foolishly; blither; babble: The poor thing blathered for hours about the intricacies of his psyche.
Also, blether .
[ ME; ON blathra to chatter, blabber ]