Zaccai is a Hebrew name meaning "pure" or "innocent"; it appears in the books of Ezra and Nehemiah as the head of a family that returned from Babylon, and it is the root of the better-known Zacchaeus. The spelling gives parents a biblical name that looks fresh and starts with a fashionable Z. Zaccai was far outside the top 5000 in 2015 but has climbed quickly, from number 2011 in 2024 to number 1865 in 2025, its best rank so far.