Naysayer rhymes with:
assayer, doomsayer, sayer, seyer, soothsayer, assayer, baier, bayar, bayer, beyer, brayer, breyer, cayer, conveyer, conveyor, doomsayer, drayer, dreyer, frayer, freier, freyer, gaier, gayer, geyer, grayer, hayer, heyer, layer, maier, mayer, mayher, mayor, mcbrayer, multilayer, neher, neyer, payer, player, preyer, purveyor, reier, reyer, sauter, sayer, schleyer, seyer, shaer, slayer, soothsayer, speyer, sprayer, stayer, steyer, strayer, surveyor, taher, thayer, trayer, weier, weyer, zaher
Naysayer sounds like:
naeger, nager, najar, najera, najjar, nakahara, nancarrow, nascar, naser, nasr, nassar, nasser, nazar, nazario, nazer, nazzaro, necessary, necker, neckwear, negara, negri, negro, neiger, nenninger, nesser, neuhauser, neuser, newcor, newshour, newswire, ngor, niagara, nicer, nicor, niger, nigeria, nigger, nigro, nihiser, nizar, nocera, noecker, nogueira, noguera, noisier, noncore, nonnemacher, nosair, nucor, nunamaker, nunemaker, nungesser, nusser, nycor