Caspian rhymes with:
thespian, appian, campion, champion, ethiopian, fallopian, hagopian, homosapien, hovsepian, mississippian, olympian, rippeon, scorpion, slepian, stepien, thespian, utopian
Caspian sounds like:
c-span, caban, cabana, cabin, cacophony, caffeine, capano, capen, capon, capone, caponi, capuano, 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, coppin, coupon, coven, coveney, covin, covina, covino, cspan, cuban