Modern invented name, likely derived from Kinsley
Kynzlee is a contemporary American invention, following the trend of adding 'y' and 'ee' to traditional surnames. It is most likely a creative phonetic spelling of Kinsley, which originates from an English surname meaning 'Cynehelm's field' or 'royal meadow'.
Less common today
Kynzlee isn't in the latest US Top 1000. It last peaked at #1,849 in 2019.
US births per 5-year period, 1990βpresent (SSA data).