Demerit rhymes with:
merit, beret, carat, ferret, garratt, inherit, jarrett, karat, karet, merit, parrot, parrott, zarett
Demerit sounds like:
daynard, dehnert, demeritt, demurred, denard, denardo, denhart, dennard, diemert, dinardo, dinehart, downard, downward, dunworth