Rototiller rhymes with:
bradtmiller, brownmiller, caterpillar, caterpiller, dannemiller, druckenmiller, freymiller, gutzwiller, kitzmiller, lockmiller, mankiller, manwiller, painkiller, steinmiller, windmiller, winemiller
Rototiller sounds like:
radler, raedler, rattler, redler, retailer, riddler, ritthaler, roethler, rothweiler, rottler