Sumitomo's rhymes with:
cuomo's, economos, alamos, cosmo's, cuomo's, economos, gizmos, herronimo's, kormos, lemos, limos, memo's, memos, nemos, olmos, simoes, stamos, vamos
Sumitomo's sounds like:
sanding, sandino's, sandness, scantiness, sending, sentence, sentences, shandong, shantytowns, shunting, smeeting, smoothens, smoothing, smoothness, something, something's, somethings, sometimes, sondheim's, sounding, soundings, soundness, squinting, summations, sundance