Niederer rhymes with:
riederer, ederer, embroiderer, federer, ferderer, hinderer, launderer, lederer, murderer, pfleiderer, riederer, rinderer, roederer, scheiderer, schwaderer, slanderer, wanderer
Niederer sounds like:
n'dour, nader, nadir, natter, nature, neater, neathery, nedrow, needier, neider, neither, nether, nethery, netter, netware, neuter, nieder, nitro, notaro, notary, noteware, nother, notre, notter, nutri, nutria, nutter