Cooper's rhymes with:
coopers, kuipers, bloopers, coopers, groupers, kuipers, loopers, poopers, supers, trooper's, troopers, troopers'
Cooper's sounds like:
capers, caporaso, capri's, caprice, caprices, capricious, caspers, cavers, ceasefires, chauffeur's, chauffeurs, chavers, chesebrough, chivers, chopper's, choppers, ciborowski, cobras, coffers, cooperage, coopers, copiers, copper's, coppers, coverage, coverages, covers, cuperose, cybercash, cybersex, cyborg, cyphers, cypress, cypress's, cypris, cyprus