Hignite rhymes with:
hignight, hignight, lignite, hignight, lignite, ammonite, basnight, bauknight, bentonite, canaanite, clintonite, finite, fortnight, franklinite, goodnight, hignight, lignite, limonite, maronite, masonite, mennonite, midnight, monzonite, newsnight, reaganite, samsonite, selenite, suburbanite, unite, urbanite, whitenight
Hignite sounds like:
hacienda, hackneyed, hashemite, hashimoto, hasn't, highsmith, hochmuth, hoshimoto, housand, huguenot, hyacinth, hyacintha, hyacinthe, hyacinthia, hyacinthie