Macwilliams rhymes with:
mcwilliams, mcwilliams, mcwilliams, mcwilliams, william's, williams, williams', mcwilliams, william's, williams, williams'
Macwilliams sounds like:
macklin's, magallanes, magellan's, magellanic, mangling, maslanka, mcclimans, mcclung, mcglinchey, mclean's, mcwilliams, mechling, megalomaniac, miglin's, mingling, miscellaneous, monoclinic, moskolenko, moslems, muscling, muslims, mussolini's, myslinski