Roper's rhymes with:
ropers, ropers, alpers, beekeepers, beepers, bloopers, bookkeepers, boppers, bumpers, calipers, calpers, campers, capers, caspers, chopper's, choppers, clippers, cooper's, coopers, copper's, coppers, crowkeepers, dampers, despres, developer's, developers, developers', diapers, dippers, droppers, drypers, elpers, eppers, flappers, flippers, gatekeepers, gossipers, grasshoppers, groundskeepers, groupers, hampers, handicappers, harper's, harpers, helpers, hopper's, hoppers, housekeepers, innkeepers, interlopers, jasper's, jaspers, jumpers, junipers, keepers, kemper's, kidnappers, kippers, koppers, koppers', kuipers, landscapers, leafhoppers, lepers, lipper's, loopers, loppers, lumper's, minesweepers, newspaper's, newspapers, newspapers', pampers, paper's, papers, papers', paratroopers, paupers, peacekeepers, pepper's, peppers, pipers, poopers, poppers, prospers, rapers, rappers, ropers, samper's, scalpers, schepers, schippers, scorekeepers, scrapers, sharecroppers, shipper's, shippers, shopkeepers, shopper's, shoppers, shoppers', shrimpers, skipper's, skippers, skyscrapers, sleepers, slippers, smokejumpers, sniper's, snipers, snipers', steppers, stoppers, storekeepers, stripers, strippers, supers, suppers, swampers, sweepers, tapers, tempers, tippers, toppers, trappers, trippers, trooper's, troopers, troopers', uppers, vapors, vipers, wallpapers, whispers, whoppers, wipers, worshipers, worshippers, wrappers, zippers
Roper's sounds like:
rapers, rappers, reappears, reappraise, reaver's, reefers, referee's, referees, refers, refresh, refreshes, rehberg, repairs, rephrase, repress, reprice, reprise, reproach, reprocess, repurchase, repurchases, reveres, reveries, reverse, reverses, reviewer's, reviewers, river's, rivers, riverso, rivieres, robarge, robberies, robbers, roberg, roberge, robers, roofers, ropers, rover's, rovers, rubberize, rubbers, ruberg, rubric, rybarczyk, ryberg