Mississippian rhymes with:
rippeon, appian, campion, caspian, champion, ethiopian, fallopian, hagopian, homosapien, hovsepian, olympian, rippeon, scorpion, slepian, stepien, thespian, utopian
Mississippian sounds like:
maccabean, mangiapane, mcbain, mcbane, mcbean, mccubbin, mcfann, mcfun, mcgavin, mcgibbon, mcgivney, mcguffin, mckibben, mckibbin, mckibbon, megaphone, misshapen