Amorphous rhymes with:
adolphus, beilfuss, cephus, delfosse, dreyfus, dreyfuss, duffus, edifice, ifas, interoffice, jeffus, josephus, memphis, office, orifice, preface, resurface, rothfuss, rufus, searfoss, snafus, stoltzfus, subsurface, surface, typhus, ziegenfuss