Mapp rhymes with:
map, app, cap, capp, chap, chapp, clap, clapp, crap, dapp, entrap, flap, frap, gap, gapp, giap, hap, happ, happe, jap, kapp, klapp, knapp, krapp, lap, lapp, lappe, map, nap, napp, pap, papp, rap, rapp, rappe, sap, sapp, schapp, schnapp, scrap, shap, shapp, slap, snap, snapp, stapp, strap, tap, tapp, tappe, trap, trapp, trappe, unwrap, wrap, yap, yapp, zap, zapp
Mapp sounds like:
m'bow, mab, mabe, mabee, mabey, mabie, maeve, maffei, maffeo, maffia, mafia, mahaffey, mahaffy, mahvi, mamba, mambo, manoff, manweb, map, mapi, mauve, mav, mave, maybe, maybee, meave, mehaffey, menefee, menifee, mib, minebea, moab, mob, mobay, mobe, moby, mof, moffa, mop, mope, move, movie, mph, muff, muffy, mumbai, mumbo, mumby, mummify, munafo, myopia