Merest rhymes with:
aquarist, barest, embarrassed, rarest, terraced, aquarist, armbrust, barest, buttressed, dearest, deforest, direst, embarrassed, florist, forest, forrest, guitarist, interest, jurist, laforest, nearest, noninterest, pendergrast, psychiatrist, purest, rainforest, rarest, reforest, severest, terraced, tourist
Merest sounds like:
mannerist, marcade, marched, marchetta, marchetti, marchita, marchitto, marcott, marcotte, marget, margette, margiotta, margittai, margot, marked, market, marketed, marketi, marketwide, markwood, marquest, marquette, marquita, marxist, marzette, marzotto, memorized, mercado, merced, merged, merkt, miracid, mirsad, monarchist, morgado, morisette, morishita, morissette, morrisett, morrisette, morrissette