Haff rhymes with:
behalf, half, assaf, behalf, braff, calf, carafe, chaff, fraph, gaf, gaff, gaffe, giraffe, graf, graff, graph, half, laff, laugh, naff, paff, pfaff, raf, raff, scaff, schaff, shaff, sielaff, skaff, staff, staph, taff, taffe, unitaf, yaffe
Haff sounds like:
haab, haaf, habeeb, habib, habibi, habibie, haby, hafey, haffey, hafif, haifa, hap, happ, happe, happy, haub, hauf, hauff, have, havey, heap, heape, heaphy, heave, heavey, heavy, hebb, hebe, hebei, heeb, hefei, hep, hepp, heppe, hevey, hevia, hi-fi, hieb, hip, hipp, hippe, hippie, hippo, hive, hob, hobbie, hobby, hobo, hof, hoff, hoffa, hofi, hoof, hoop, hoopoe, hop, hope, hopf, hopi, hopp, hoppa, hoppe, hoppy, houff, houp, hove, hovey, hovy, hub, hubbub, hubby, hube, huff, huffy, hupe, hupp, hype, hyphae, hypo