Helf rhymes with:
chelf, delph, elf, herself, himself, hisself, itself, myself, oneself, ourself, relf, relph, self, selph, shelf, theirself, themself, yourself
Helf sounds like:
halebopp, halevi, half, halfway, halifa, halve, helaba, helluva, help, helvey, helvie, hilb, holub, hulvey