Zillennial /zɪˈlɛni.əl/adjective 1noun 1forms 2 adjective1 •Of or relating to Zillennials.The Duck Dynasty star turned faith influencer has given zillennial Christianity a seductive rebrand. Should you listen? — 2022 noun1 •A person born on the cusp of, or during the latter years of Generation Y/Millennials and early years of Generation Z.These and other differences raise larger questions: How did Zillennials come to be this way? At what point did their tactics diverge? — 2019 formsZillennials · zillennials