balderdash (n.)youdaoicibaDictYouDict[balderdash 词源字典]
1590s, of unknown origin; originally a jumbled mix of liquors (milk and beer, beer and wine, etc.), transferred 1670s to "senseless jumble of words." From dash; first element perhaps cognate with Danish balder "noise, clatter" (see boulder).[balderdash etymology, balderdash origin, 英语词源]