blather
Blather (verb) means to talk quickly without saying much that makes sense.
Etymology
Comes from Middle English bletheren, bloderen, from Old Norse blaðra (“to speak inarticulately, talk nonsense”). It is cognate with Scots blether, bladder, bledder (“to blather”), dialectal German bladdern (“to talk nonsense, blather”), Norwegian bladra (“to babble, speak imperfectly”), and Icelandic blaðra (“to twaddle”).