Macmaster rhymes with:
mcmaster, mcmaster, mcmaster, grandmaster, headmaster, master, mcmaster, aster, astor, blaster, caster, castor, disaster, faster, gaster, grandmaster, headmaster, jaster, kaster, laster, master, mcmaster, oleaster, paster, pastor, pasztor, pilaster, plaster, raster
Macmaster sounds like:
mckinstry, mcmaster, misconstrue