Slovenian rhymes with:
beethovenian, armenian, athenian, beethovenian, fenian, tyrrhenian, albanian, amazonian, andonian, apollinian, apollonian, argentinian, armenian, arslanian, aslanian, athenian, augustinian, babylonian, bahrainian, beethovenian, bosnian, bostonian, caledonian, carolinian, carthaginian, chechnyan, darwinian, devonian, draconian, estonian, fenian, finian, flaminian, gorgonian, houstonian, hovnanian, indianian, iranian, jacksonian, jeffersonian, jordanian, lithuanian, louisianian, mediterranean, melkonian, murnian, newtonian, o'hanian, ohanian, oregonian, orleanian, pakistanian, palestinian, panamanian, patagonian, pennsylvanian, plutonian, pomeranian, romanian, rumanian, shahinian, simonian, smithsonian, stepanian, subramanian, subterranean, tanzanian, tasmanian, tyrrhenian, ukrainian, usoniam, vartanian, washingtonian
Slovenian sounds like:
salvina, salvino, schlobohm, sclafani, silvana, slaven, slavin, slavonia, slepian, sleven, slevin, slip-on, slovene, slovenia, slovonia, sullivan, sylvain, sylvan, sylvana, sylvania