Coppin rhymes with:
toppin, arpin, aspin, backspin, crespin, crispin, daspin, flippin, galpin, gilpin, halpin, hennepin, jospin, juarez-espin, jupin, lapin, ongpin, pepin, peppin, pippin, protropin, ruxpin, somatotropin, steppin', tappin, tippin, toppin, toupin, trupin, turpin, vipin
Coppin 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, coopman, copeman, copen, coupon, coven, coveney, covin, covina, covino, cspan, cuban