Niihau rhymes with:
malchow, matthau, ballowe, barraclough, barricklow, bedenbaugh, birkenau, boelkow, bolkow, brandau, bridenbaugh, bumbalough, burklow, buterbaugh, butterbaugh, campau, chertkow, chitrao, clabough, colao, colclough, corrao, dachau, darrough, defenbaugh, deffenbaugh, delao, disbrow, dochow, dorough, dorrough, dumlao, fairclough, fambrough, fernau, flatau, flotow, gienow, glashow, grabau, gronau, hansbrough, hartsough, heinbaugh, henao, ingrao, kellough, killough, kimbrough, kishbaugh, krakow, larowe, liau, lindau, lithgow, loppnow, malbrough, malchow, matthau, millau, mimnaugh, minkow, mostow, muenchow, muldrow, newbrough, nicolau, ostrow, palau, pankau, pavao, pleskow, prochnow, rakow, redenbaugh, renfrow, rentfrow, ristau, rodenbaugh, rohrbaugh, rohrbough, rosebrough, rosenau, rosenow, ruhnau, saechao, sandau, scarbrough, scharlau, selchow, semrau, serrao, soltau, stanbrough, steinbaugh, strausbaugh, suckow, sunau, swerdlow, umbaugh, wetterau, wiederaufbau, zornow
Niihau sounds like:
n, n., n92762, na, nah, nahm, nahum, naim, naiman, nam, name, nan, nana, nania, nanna, nanney, nanni, nannini, nanny, nano, naoma, naomi, nau, nauman, naumann, naw, nay, ne, nee, neeman, neenan, nehemiah, neiman, nein, nemean, nemo, nene, neni, neo, neoma, neon, neu, neue, neuman, neumann, new, newey, newman, newmann, newnam, ney, neyman, ni, nie, nieman, niemann, niemi, nienow, nihay, nihei, nihon, nimmo, nimoy, nina, nine, ninneman, ninny, nino, ninon, no, noa, noaa, noah, noam, noami, noe, noh, noiman, nom, nome, nomi, nominee, nomo, non, nona, none, nonhuman, nonie, nonunion, noon, noonan, noone, nooney, noun, now, nowa, nu, nuhn, numia, nummi, nun, nunan, nunn, nuno, nye, nyhan, nyina, nyman