Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb blather
1 sense of blather
Sense 1
babble, blather, smatter, blether, blither -- (to talk foolishly; "The two women babbled and crooned at the baby")
=> chatter, piffle, palaver, prate, tittle-tattle, twaddle, clack, maunder, prattle, blab, gibber, tattle, blabber, gabble -- (speak (about unimportant matters) rapidly and incessantly)