An Etymological Dictionary of the German Language/krächzen

by Friedrich Kluge

krächzen, vb., ‘to croak,’ ModHG. only, a deriv. of krachen; in MidHG. krochzen, OHG. chrocchezan, ‘to croak,’ which is related by gradation to the stem of krachen. From AS. cracian, cracettan was formed, like ModHG. krächzen, from krachen.