Steeply rhymes with:
cheaply, deeply, leapley, accompli, amply, bapley, capley, cheaply, chipley, copley, coupley, crisply, cropley, deeply, epley, eppley, harpley, kepley, lampley, leapley, lepley, panoply, principally, rampley, rapley, reapply, ripley, rupley, sampley, shapely, shapley, sharpley, sharply, shepley, shipley, simply, stampley, stapley, supplee, tapley, tarpley, teply, whelpley
Steeply sounds like:
sheathbill, stabile, stable, stabley, staebell, stapel, staple, stapley, stavely, stavola, steeple, steffel, stefl, steppel, stibel, stiebel, stiefel, stifel, stiffel, stiffly, stifle, stoffel, stoppel, stovall, stubble, stuteville, suggestible, suitable, suitably