Megafood rhymes with:
fastfood, seafood, alamoud, altitude, amplitude, aptitude, attitude, barbecued, barbequed, certitude, countersued, d'etude, devalued, dulude, ensrud, exactitude, fastfood, fortitude, gratitude, ineptitude, interlude, interviewed, latitude, lindamood, longitude, magnitude, multitude, platitude, prelude, previewed, rectitude, seafood, servitude, solicitude, solitude, turpitude, unissued, verisimilitude
Megafood sounds like:
macbeth, makeshift, mcavity, mcbeath, mcbeth, mcfate, mckevitt, megabit, megabyte, messagepad, misbehaved, misfit, mousepad, mukhopadhyay, muscovite