Registrar rhymes with:
acustar, adelaar, aerostar, alar, alcazar, alomar, americar, amstar, apstar, avatar, aydar, boxcar, budvar, canstar, caviar, cellstar, cinnabar, cojimar, commissar, constar, crestar, crowbar, dadfar, dagmar, earthstar, eldar, electricar, escobar, eurostar, feldspar, firstar, flagstar, fluorspar, gaidar, geidar, genstar, globalstar, goldstar, goodbar, handlebar, hectare, incstar, issar, itamar, itar, jaguar, kraushaar, lodestar, lumbar, magyar, mcnemar, melkar, memoir, millibar, minicar, minstar, miramar, mizar, moammar, morningstar, motorcar, mylar, narlikar, nascar, navistar, navstar, nayyar, norstar, northstar, oakar, oberstar, parmar, pleshar, podnar, primestar, proscar, radar, railcar, ravishankar, rebar, repertoire, reservoir, rokahr, rokar, samatar, sandbar, sarkar, seminar, seskar, sidebar, sitmar, souccar, sportsbar, srinagar, streetcar, sukthankar, sunstar, superbar, telstar, texstar, thusfar, tigar, torstar, tristar, tygar, vandecar, vonderhaar, vukovar, windstar, wordstar, zadar, zanzibar
Registrar sounds like:
racketeer, rakestraw, raster, rastetter, raxter, reactor, rector, rectory, regester, register, registry, reister, requester, resetar, rester, restore, restorer, richter, riester, riesterer, righter, rister, roaster, rochester, rocketry, roister, rooster, rossiter, roster, royster, rustier