An Etymological Dictionary of the German Language/vergeuden

by Friedrich Kluge

vergeuden, vb., ‘to squander, dissipate,’ from MidHG. giuden (übergiuden), wk. vb., ‘to boast, make a parade, squander with ostentation’; unknown to OHG. Goth. *giwiþa might refer to OHG. gëwôn, ‘to open one's mouth wide’ (see gähnen).