Lacourse rhymes with:
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, laforce, marse, midcourse, morse, morss, nighthorse, norse, nourse, outsource, parse, pearce, peirce, perforce, pierce, racehorse, recourse, reinforce, remorse, resource, scarce, sorce, source, sparse, taskforce, telsource, tierce, uniforce, unisource, vorce, whitehorse, wilberforce, workforce, workhorse
Lacourse sounds like:
la-crosse, lacroix, lacross, lacrosse, lagreca, lakers, laser's, lasers, lasorsa, lazarski, lazarus, lazarz, leaguers, leakers, lecherous, legros, legwork, lessors, leugers, licorice, liqueurs, liquors, lizarraga, lockers, loggers, lograsso, lookers, losers, losers', lucrecia, lugar's, lugers, luxuries, luxurious, lycurgus