Holding steady, #7,885 for girls today.
Popularity of Kaysi since 1971
Babies named Kaysi per year in U.S. Social Security records.
Data table (by decade)
| Decade | Girls |
|---|---|
| 1970s | 21 |
| 1980s | 150 |
| 1990s | 148 |
| 2000s | 115 |
| 2010s | 102 |
| 2020s | 71 |
Meaning & origin
Kaysi is a modern respelling of the Irish surname Casey, which originated as Ó Cathasaigh, meaning "descendant of Cathasach," from the Gaelic word for "vigilant." The name first appeared in U.S. records in 1971 and saw its highest usage in 1988, when it ranked in the top few thousand. By 2025, Kaysi had settled into modest but steady use, ranking 7,885th with approximately 1 in every 123,636 girls receiving the name. While never among the most popular choices, Kaysi reflects a broader trend of respelling traditional names to create a distinct identity, particularly in the 1980s and 1990s. Its trajectory indicates a stable but niche presence, with no strong regional concentration or resurgence.
Kaysi is a modern respelling of Casey, itself an Anglicized form of the Irish surname Ó Cathasaigh, meaning "descendant of Cathasach." The Gaelic personal name Cathasach means "vigilant" or "watchful." While Casey has long been used as a given name for both sexes, the variant spelling Kaysi emerged in the United States in the late 20th century, peaking in the 1980s.
Nicknames & variants
Nicknames: Kae, Kay, Kays
Sibling names for Kaysi
Names that share Kaysi's style, for a brother or sister.
