Nieder rhymes with:
neider, birdfeeder, breeder, cedar, ceder, eader, feeder, grieder, kedar, leader, leeder, lieder, meader, meador, meder, meeder, neider, reader, reeder, reider, rieder, schreder, schweder, seader, sheeder, speeder, treder, veeder, wieder
Nieder sounds like:
n'dour, nader, nadir, natter, nature, neater, neathery, nedrow, needier, neider, neither, nether, nethery, netter, netware, neuter, niederer, nitro, notaro, notary, noteware, nother, notre, notter, nutri, nutria, nutter