Halfhill rhymes with:
anthill, barnhill, berryhill, brookehill, broyhill, cahill, coghill, dunhill, foothill, gladhill, gledhill, greenhill, hemphill, mccahill, mcmahill, molehill, parkhill, polhill, rockhill, sandhill, sawhill, scahill, stanphill, stodghill, stonehill, summerhill, tannahill, thornhill, tuthill, underhill, whitehill, whittinghill
Halfhill sounds like:
helpful, helpfully, hillbilly, hullabaloo