Negroid rhymes with:
fibroid, thyroid, altoid, bioflavonoid, colloid, conchoid, ellipsoid, fibroid, geoid, haploid, placoid, retinoid, tabloid, thyroid, typhoid
Negroid sounds like:
naccarato, nasworthy, nazareth, negrete, newgard, newsworthy, nexrad, nicorette, niggard, nockard, noseworthy, nygaard, nygard