Doomsayer rhymes with:
assayer, naysayer, sayer, seyer, soothsayer, assayer, baier, bayar, bayer, beyer, brayer, breyer, cayer, conveyer, conveyor, drayer, dreyer, frayer, freier, freyer, gaier, gayer, geyer, grayer, hayer, heyer, layer, maier, mayer, mayher, mayor, mcbrayer, multilayer, naysayer, 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
Doomsayer sounds like:
daenzer, dancer, danger, danker, danser, dansereau, danzer, danziger, deininger, demagoguery, demonizer, denker, denninger, denser, denzer, dettinger, dinger, dinosaur, doniger, dunker