Estonian rhymes with:
bostonian, houstonian, bostonian, houstonian, newtonian, plutonian, washingtonian, amazonian, andonian, apollonian, babylonian, bostonian, caledonian, devonian, draconian, gorgonian, houstonian, jacksonian, jeffersonian, melkonian, newtonian, oregonian, patagonian, plutonian, simonian, smithsonian, usoniam, washingtonian
Estonian sounds like:
eastham, eastin, eastman, easton, echidna, eckstein, ecosystem, ecton, eighteen, ejection, equation, equitation, estan, esteem, estonia, exaction, excitation, execution, executone, exhaustion, exton, eyestone