Modern invented name, possibly meaning hay clearing or flower.
Zailey is a modern American coinage, likely created by blending the popular 'Z' initial with the trendy 'ailey' suffix found in names like Hailey or Bailey. While it lacks a deep historical etymology, it is sometimes associated with the flower Zinnia or the Old English root 'leah' meaning a meadow or clearing.
Less common today
Zailey isn't in the latest US Top 1000. It last peaked at #2,081 in 2018.
US births per 5-year period, 1990βpresent (SSA data).