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.
About 8 girls were named Keisi in 2025.
US births per 5-year period, 1990–present (SSA data).
