An Etymological Dictionary of the German Language/murmeln

by Friedrich Kluge

murmeln, vb., ‘to murmur,’ from MidHG. murmeln, OHG. murmulôn, with the parallel form murmurôn, ‘to murmur, grumble’; either from Lat. murmurare, or rather a native onomatopoetic form. See murren.