Sparse rhymes with:
parse, arce, carse, farce, marse, parse, agresource, airforce, air_force, arce, bierce, borse, bourse, carse, clotheshorse, coarse, concourse, corse, counterforce, course, deadhorse, discourse, divorce, endorse, enforce, ensource, farce, fierce, force, forse, gift-horse, healthsource, hoarse, horse, intercourse, lacourse, laforce, marse, midcourse, morse, morss, nighthorse, norse, nourse, outsource, parse, pearce, peirce, perforce, pierce, racehorse, recourse, reinforce, remorse, resource, scarce, sorce, source, taskforce, telsource, tierce, uniforce, unisource, vorce, whitehorse, wilberforce, workforce, workhorse
Sparse sounds like:
sabers, sabres, safarik, safaris, safire's, safra's, sagebrush, sapphires, sassafras, sassafras's, savarese, savers, savior's, saviors, savors, saybrook, schaberg, schaefers, schepers, schippers, scifres, seaberg, seabrook, seabrook's, seabrooks, seaburg, seafarers, seavers, seevers, severs, sevruga, sferrazza, sforza, shakespeare's, shapiro's, shapiros, shavers, shipper's, shippers, shipwreck, shivers, shoberg, shopper's, shoppers, shoppers', siebers, sievers, sifers, sjoberg, skipper's, skippers, sobers, sofer's, sparacio, sparaco, sparc, spares, spargo, spark, sparkes, sparks, sparky, sparrows, spears, speirs, speros, sperrazza, spheres, spiers, spires, spoor's, sporck, spores, spragg, sprague, sprague's, sprayers, sprays, sprees, sprick, sprigg, spriggs, sprizzo, sprock, sprogus, sprogus's, sprouse, spruce, spurge, spurious, spurs, sufferers, suffers, suffrage, superheroes, superhighway, superhighways, superior's, superiors, supers, superx, suppers, suppress, suppresses, sverige, sweepers, syphers