Adaya is a form of the Hebrew name Adaiah, which means "the Lord has adorned" and belongs to several minor figures in the Old Testament, among them the grandfather of King Josiah. The simplified spelling makes it an easy, melodic choice that sits comfortably beside Amaya and Anaya. Adaya was rare in 2000 at number 9881, climbed to number 2125 in 2023 and stands at number 2895 in 2025 with 58 births.