Costar rhymes with:
mostar, adstar, mostar, adstar, betar, ishtar, mostar, adstar, aeromar, aguilar, aguillar, ansgar, anwar, apcar, armoire, bandar, barabar, betar, bukar, calmar, dalbar, dunbar, edmar, einspahr, exemplar, finbar, genmar, gharbonifar, ghorbanifar, glomar, golkar, hagar, ingmar, ingvar, insofar, ishtar, jayashankar, kajuahar, kalvar, kandahar, lachmar, loncar, lorimar, lubar, meciar, meghdar, molenaar, mostar, nizar, oldsmar, omaar, omar, otmar, palkar, palomar, pixar, plocar, polysar, quasar, salazar, samar, shankar, silvar, similiar, snackbar, sonar, staniar, stinar, sundar, sylmar, synar, terhaar, udvar, ultramar, univar, valspar, wagenaar, waldemar, wassenaar, weimar, weishaar
Costar sounds like:
cacciatore, cadre, caster, castor, castoro, castro, cater, caterer, cather, catheter, cedar, ceder, cestaro, cetera, chatter, chaudhry, cheater, cheddar, chester, chichester, chitra, chitrao, chitter, chodorow, chowder, chowdhury, cider, citro, coaster, coauthor, coder, coderre, cooter, costeira, coster, costra, coterie, cotter, cottier, couture, couturier, cowdery, cowdrey, cuadra, custer, cuter, cutrer, cutter, cytherea