Alert, vigorous, or watchful
Keisi is a modern phonetic adaptation of the Irish surname and given name Casey. It derives from the Gaelic 'Cathasaigh', which signifies someone who is vigilant or watchful in battle. While the spelling is contemporary and rare, it retains the energetic spirit of its traditional roots.
Less common today
Keisi isn't in the latest US Top 1000. It last peaked at #4,063 in 2015.
US births per 5-year period, 1990βpresent (SSA data).