Idaho's rhymes with:
navajos, backhoes, navajos, pantyhose, walthose, aburto's, aeromexico's, afterglows, alagoas, ambrose, amigos, angelo's, angelos, angeloz, antonio's, antonios, backhoes, bellrose, bigelow's, bongos, borough's, boroughs, bozos, buffalo's, buffalos, bulldoze, bungalows, burrowes, calypsos, cameos, cargo's, cargoes, cargos, carolco's, cashflows, chicago's, chico's, ciros, cocos, commandos, cristo's, crossbows, demos, diego's, domino's, dominoes, dominos, elbows, embryos, eskimos, fallows, falsettos, fargo's, farrow's, fellowes, gameshows, guangjo's, guantanamo's, guinarou's, gyros, hasbro's, haso's, hirohito's, hognose, hydro's, inflows, interco's, jumbos, kilos, kinko's, koslow's, litco's, logos, marco's, meadows, mealynose, melrose, mexico's, michelangelo's, michelangelos, microprose, monaco's, montrose, navajos, new-mexico's, otto's, outflows, overflows, overthrows, pantyhose, patios, pebereau's, penrose, pharos, photo's, photos, pistachios, politicos, portfolio's, portfolios, primo's, primrose, promos, radio's, radios, rainbows, ratios, repos, rhinos, rockrose, rodeos, romano's, seow's, sesno's, shadows, sideshows, silos, sokolow's, stereos, studio's, studios, studios', tempos, tobacco's, tobaccos, tokyo's, tomatos, tomorrow's, tomorrows, tornado's, tornados, torpedos, torsos, trio's, tuxedos, undergoes, undertows, walthose, widdows, willowes, willows, yoshihiro's
Idaho's sounds like:
idea's, ideas, idec, idiocy, idiotic, idiots, iodice, iodide's, iodides, it's, itasca, itch, itches, itchy, itek, ithaca, ithaca's, ito's, itochu, its, itsy, itzhak