Okamoto rhymes with:
ajinomoto, ajinomoto, enomoto, fujimoto, fukumoto, hamamoto, hashimoto, hoshimoto, iwamoto, kakimoto, kawamoto, kimoto, komoto, kuramoto, matsumoto, miyamoto, morimoto, moto, muramoto, nakamoto, nishimoto, okimoto, sakamoto, sugimoto, takemoto, tanimoto, tsukamoto, yamamoto, yoshimoto
Okamoto sounds like:
oakmont, occasioned, okimoto, oquendo, osment, osmond, osmund, oxygenate, oxygenated, ozment, ozmet