Couper rhymes with:
kuhar, bluer, booher, breuer, brewer, bruer, buer, chewer, dewar, dewarr, duer, ewer, feuer, fewer, fluor, heuer, hewer, kruer, kuhar, lesuer, lesueur, newer, pruer, pursuer, reviewer, sewer, skewer, truer, uher, viewer, who're, wrongdoer
Couper sounds like:
cabrera, cafaro, caffery, caffrey, cafiero, caper, capper, capra, capraro, capri, caprio, casebeer, casebier, caspar, casper, caver, caviar, cease-fire, ceasefire, cepero, chaparro, chauffeur, chavarria, chavira, cheaper, cheever, chesbro, chesebro, chevrier, chipper, choper, chopper, chopra, cibro, cifra, cipher, cipri, cobra, cobre, cofer, coffaro, coffer, cooper, coover, copher, copier, copper, coppery, copra, cosper, cover, cowper, cyber, cypher