Wise, or a variation of Kaizan
Kaisan is a rare name with multiple potential etymologies. In an Arabic context, it is often associated with wisdom or intelligence. It may also be encountered as a variant of the Japanese name Kaizan, meaning 'reforming' or 'continuous improvement'.
Less common today
Kaisan isn't in the latest US Top 1000. It last peaked at #6,573 in 2020.
US births per 5-year period, 1990βpresent (SSA data).