Megadeal rhymes with:
cardiel, ardshiel, audiophile, automobile, bonesteel, bookmobile, breazeale, cardiel, cartwheel, chrusciel, citisteel, clendaniel, cornmeal, dalziel, ezekiel, flywheel, glockenspiel, hartfiel, newsreel, oatmeal, odneal, oldsmobile, piecemeal, rosensteel, rosenstiel, snowmobile, tarheel, treadwheel, vanderweele
Megadeal sounds like:
macdill, macdowell, machtley, macktal, magdala, mastel, mcdeal, mcdill, mcdole, mcdowall, mcdowell, migdal, mightily, minoxidil, mostly