Mcmath rhymes with:
math, bath, corath, fath, flath, gath, hath, idiopath, kath, lath, magrath, math, mcgath, mcgrath, nath, path, pathe, plath, rath, spath, telepath, vath, wrath
Mcmath sounds like:
machined, magenta, maginot, magnant, magnate, magnet, magneti, magnetite, magnitude, maisonet, management, mangement, mankind, masonite, massenet, mazzanti, mccamant, mcconathy, mcentee, mcginnity, mcginty, mcintee, mckeand, mcnatt, mcnett, mcnitt, mcnutt, migent, mincemeat, miscount, monsanto, monzonite, musante, myoscint