Mackintosh rhymes with:
santosh, santosh, backwash, brainwash, goulash, hogwash, mouthwash, pugwash, santosh, shipwash, whitewash
Mackintosh sounds like:
macintax, macintosh, macintosh's, macintoshes, magnates, magnet's, magnetek, magnetic, magnetics, magnets, magnitudes, management's, managements, managements', mankind's, mankinds, massenet's, mccants, mcintosh, mismatch, mismatches, monsanto's