Vigorous, alert, or a modern phonetic variant of Casey
Keisy is a modern phonetic spelling of the Irish name Casey, which is derived from the Gaelic surname Ó Cathasaigh. It traditionally means 'vigorous' or 'watchful.' In recent years, this specific spelling has gained some popularity in Spanish-speaking communities as a creative adaptation of the English sound.
Less common today
Keisy isn't in the latest US Top 1000. It last peaked at #2,811 in 2022.
US births per 5-year period, 1990–present (SSA data).
