Amazonian rhymes with:
andonian, apollonian, babylonian, bostonian, caledonian, devonian, draconian, estonian, gorgonian, houstonian, jacksonian, jeffersonian, melkonian, newtonian, oregonian, patagonian, plutonian, simonian, smithsonian, usoniam, washingtonian
Amazonian sounds like:
ahmanson, amason, amazon, amazonia, amgen, amicone, amison, anacin, anasquan, ancona, angina, anguiano, animism, ankeney, ankeny, ankney, anscom, anshan, ansin, ansohn, anson, ansonia