An Etymological Dictionary of the German Language/Suppe
Suppe, f., ‘soup, broth’; late MidHG. suppe (soppe), f., ‘broth, sauce, soup’; properly a MG. and LG. word, the pp of which would be represented by pf in genuine HG. Allied to the root sū̆p, ‘to drink’; comp. MidHG. supfen, ‘to sip, drink’ (Du. soppen, E. to sop) and saufen. Comp. Du. sop and soep. The LG. word passed into Romance; comp. Ital. zuppa, ‘wine soup,’ Span. sopa, Fr. soupe, whence the equiv. E. soup (OFr. souppe, ‘sop’).