Helvey rhymes with:
helvie, castellvi, elvie, elvy, helvie, melvie, selvey, alvey, calvi, castellvi, elvie, elvy, falvey, helvie, hulvey, malvie, melvie, ogilvie, ogilvy, olvey, salvi, selvey, silvey, silvi, silvie, stalvey, sylvie
Helvey sounds like:
halebopp, halevi, half, halfway, halifa, halve, helaba, helf, helluva, help, helvie, hilb, holub, hulvey