Fields' rhymes with:
cornfields, field's, fields, cornfields, field's, fields, nields, oshields, shield's, shields, wields, yields
Fields' sounds like:
fallouts, falotico, faulds, faults, feldhaus, feltes, felts, feltus, feltz, field's, fieldhouse, fields, fildes, filets, fillets, flatheads, flats, flattish, fledge, fleet's, fleets, fleitas, floats, floods, flouts, fluids, flutes, folds, folts, foltz, foulds, fults, fultz