Adulthood rhymes with:
estatehood, knighthood, parenthood, sainthood, statehood, babyhood, boyhood, brotherhood, childhood, estatehood, falsehood, fatherhood, girlhood, knighthood, likelihood, livelihood, manhood, moshood, motherhood, nationhood, neighborhood, orahood, parenthood, robinhood, sainthood, statehood, victimhood, womanhood
Adulthood sounds like:
addled, adelaide, adulate, aduliadae, adult, athlete, aydelott, aydelotte