Okay, I opened up my great big book here and I think we last left off in the bl’s. So. . .
blatherskite–scottish origin. a blustering or offensively loquacious person. A blowhard. Also, blustering or empty talk. 1840s or so onward. Seems to be used by pretty much everyone as it was labeled “Western” in Barletts, was used during the Civil War, and also showed up in Twain’s A Connecticut Yankee. Interesting. I never heard of this one before (and can’t wait to use it!)