Simple rhymes with:
dimple, gimpel, kimpel, kimple, pimple, strimple, ampal, ample, crumple, dalrymple, detemple, dimple, example, gimpel, hampel, hample, hempel, humpal, kempel, kemple, kimpel, kimple, lampl, pampel, pimple, rempel, rumpel, rumple, sample, semple, stempel, stemple, strimple, tempel, temple, trample, wemple, zempel
Simple sounds like:
sample, sampley, sanville, schnabel, schnebly, seasonable, semple, shamble, shambley, shameful, simply, sinful, sinopoli, snabel, snapple, snavely, sniffily, sniffle, snively, snowball, snowfall, snowmobile, snowplow, sunnyvale, symbol