Coopman rhymes with:
koopman, koopmann, groopman, koopman, koopmann, shoopman, chapman, chipman, clapman, copeman, groopman, hapeman, hopman, kampman, kampmann, koopman, koopmann, krupman, lampman, lipman, lippman, lippmann, lopeman, midshipman, shipman, shoopman
Coopman sounds like:
c-span, caban, cabana, cabin, cacophony, caffeine, capano, capen, capon, capone, caponi, capuano, caspian, cauffman, cavan, cavanah, caveman, caven, cavin, chabon, chaffin, chafin, chapin, chapman, chauvin, chavin, cheapen, cheekbone, chiappone, chiffon, chipman, chopin, chovan, cobain, cobaine, coben, cobian, cobin, coffeen, coffin, coffman, copeman, copen, coppin, coupon, coven, coveney, covin, covina, covino, cspan, cuban