Sweet
Zissy is a diminutive form of the Yiddish name Zissel, which translates directly to 'sweet.' It has historically been used as an affectionate nickname or a standalone name within Ashkenazi Jewish communities.
Less common today
Zissy isn't in the latest US Top 1000. It last peaked at #2,421 in 2025.
US births per 5-year period, 1990βpresent (SSA data).