Sumatoma rhymes with:
retinoblastoma, toma, algoma, aroma, bancoklahoma, bouma, carcinoma, choma, coloma, coma, diploma, douma, glaucoma, goma, homa, leoma, loma, luoma, lymphoma, melanoma, mesothelioma, moma, multnomah, naoma, neoma, nujoma, oklahoma, oma, paloma, papilloma, poma, retinoblastoma, roma, saloma, scoma, shiroma, sloma, soma, sonoma, stroma, tacoma, thoma, toma, troma, xoma
Sumatoma sounds like:
saindon, samedan, sandeen, sanden, sandin, sandino, sandman, sandmann, sandom, sandon, sandtown, sanitation, santana, santayana, santin, santini, santino, santon, santone, santoni, schwendeman, segmentation, sentman, shantytown, shenton, simonton, sindona, sindoni, sinton, smetana, smithtown, smitten, smoothen, snedden, sneddon, snethen, snowden, snowdon, somethin', sometime, sondheim, sumatomo, sumitomo, summation, sundeen, sundheim, sundin, sundown, suntan, swaminathan, swanton, swinton