Words That Rhyme With "What're" :

2 syllables:

atar, ator, attar, batter, beater, better, bettor, biter, bitter, blatter, blighter, bloater, blotter, blubber, blunter, bluster, boater, brighter, bucker, bunter, buster, butler, butter, cater, chatter, cheater, chitter, chuddar, chugger, chukker, chunter, clatter, clubber, cluster, clutter, cooter, cottar, cotter, cottier, crater, critter, crupper, cupper, Custer, cuter, cutler, cutter, daughter, debtor, dieter, dotter, doubter, douter, ducker, ductor, duster, eater, eighter, faitour, fatter, fetor, fetter, fighter, fitter, Flater, flatter, flitter, floater, flouter, fluster, fluter, flutter, foetor, footer, fouter, frater, freighter, fretter, fritter, fruiter, fucker, gaiter, gater, gator, Geter, getter, glitter, goiter, goitre, grater, greater, greeter, gritter, grunter, Gunter, gutter, hater, hatter, heater, hitter, hooter, hotter, hugger, hunter, iter, Jeter, jetter, jitter, jotter, juster, knitter, knotter, krater, kupper, later, latter, lauter, lawter, letter, lighter, liter, litre, litter, loiter, looter, lotter, lubber, lugger, luster, lustre, luter, mater, matter, meeter, meter, metre, miter, mitre, motor, mucker, mudder, mugger, muster, mutter, natter, neater, netter, neuter, niter, nitre, nuggar, nutter, oater, ottar, otter, outer, pater, patter, peter, petter, pewter, pitier, plaiter, plater, platter, plotter, plucker, plugger, potter, pouter, praetor, prater, pretor, prettier, pucker, punter, putter, puttier, Qatar, rater, ratter, reiter, retter, Reuter, reutter, rhetor, righter, ritter, rooter, rotor, rotter, router, rubber, rubor, Rucker, rudder, rugger, rustre, Ruter, rutter, sater, Sator, satyr, scatter, scooter, scoter, scouter, scrubber, scudder, scupper, scutter, seater, setter, shatter, shooter, shouter, shudder, shunter, shutter, sitter, skater, skeeter, skitter, slater, slatter, slaughter, sleeter, Sliter, slotter, slubber, slugger, smatter, sooter, souter, spatter, spitter, splatter, splitter, splutter, spotter, spouter, spudder, sputter, stater, stator, stetter, straighter, Stucker, stutter, succor, succour, sucker, suiter, suitor, Sumter, supper, sutler, Sutter, Tatar, tater, tatter, teeter, tetter, thruster, tighter, titer, titre, titter, toter, totter, touter, traitor, treater, trotter, trucker, truster, trustor, tucker, tugger, tutor, udder, upper, utter, vetter, voter, writer, yachter, yatter

3 syllables:

abator, abductor, abetter, abettor, abutter, accouter, accoutre, adductor, adjuster, adjustor, aflutter, aglitter, bedsitter, begetter, bespatter, collator, combustor, commuter, computer, conductor, confuter, constructor, creator, cunctator, curator, debater, debator, debugger, Decatur, deflator, delustre, Demeter, demetre, depleter, destructor, dictator, dilater, dilator, eductor, embitter, emitter, enfetter, escheator, exciter, excitor, exploiter, fellator, garroter, garrotter, glossator, igniter, ignitor, imbitter, inciter, inductor, inflater, inflator, instructor, legator, Lemaitre, levator, maltreater, masseter, Mercator, obstructer, obstructor, Perlmutter, piscator, polluter, promoter, pronator, propraetor, rebutter, receiptor, reciter, recruiter, reductor, refuter, relater, relator, remitter, repeater, rewriter, saltpeter, saltpetre, saluter, scrutator, secreter, secretor, standpatter, stonecutter, submitter, topflighter, translator, transmitter, uncluttered, unfetter, unmiter, unmitre, unuttered, uprooter, upsetter, vignetter, woodcutter

4 syllables:

antimatter, chitterchatter, graphomotor, imperator, imprimatur, interrupter, locomotor, manumitter, motherfucker, nonconductor, overnighter, psychomotor, reconnoiter, reconnoitre, surrebutter, thermomotor, ureter, vasomotor, vindicator

5 syllables:

ideomotor, microcomputer, minicomputer, oculomotor, remunerator, semiconductor, supercomputer