Losers' rhymes with:
composer's, composers, joser's, mozer's, abusers, accusers, advertiser's, advertisers, advertisers', adviser's, advisers, advisers', advisors, analyzers, anheuser's, appetizers, appraisers, blazers, browsers, bulldozers, caesar's, caesars, caesars', cleansers, colonizers, composer's, composers, cruiser's, cruisers, endusers, exercisers, fertilizers, franchisers, fraser's, freezers, fundraiser's, fundraisers, geysers, incisors, ionizers, itemizers, joser's, kaiser's, laser's, lasers, losers, merchandisers, misers, mobilizers, mousers, mozer's, nazer's, organizers, pfizer's, raisers, razor's, razors, rittereiser's, scissors, selzer's, stabilizers, stargazers, sterilizers, supervisor's, supervisors, supervisors', sympathizers, synthesizers, trailblazers, tranquilizers, trousers, tweezers, user's, users, users', visors, weyerhaeuser's, windsor's, windsors
Losers' sounds like:
la-crosse, lacourse, 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, lucrecia, lugar's, lugers, luxuries, luxurious, lycurgus