blather
The origin and history of blather.
Etymology
From Middle English bletheren, bloderen, from Old Norse blaðra (“to speak inarticulately, talk nonsense”). Cognate with Scots blether, bladder, bledder (“to blather”), dialectal German bladdern (“to talk nonsense, blather”), Norwegian bladra (“to babble, speak imperfectly”), Icelandic blaðra (“to twaddle”).