Muffley rhymes with:
gruffly, roughly, awfully, beautifully, briefly, chiefly, colorfully, diffley, gruffly, hafley, heffley, hefley, medfly, peffley, powerfully, roughly, safely, safley, schlafly, stampfli, stiffly, wolfley
Muffley sounds like:
mabel, mabelle, mabile, mable, mabley, mainville, maneval, manfully, manvel, manvil, manville, mapel, maple, maybelle, mayville, mobil, mobile, mobilia, mobley, monopole, monopoly, movable, muffle, mumble