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Girl · Irish
Cassidy Say it: KASS-ih-dee
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Meaning From the Irish surname Ó Caiside 'descendant of Caiside', a personal name of uncertain meaning; the gloss 'curly-haired' is unproven.
Uncertain several explanations, none settled.
Became a popular American girls' name in the 1990s.
Its wave through time Most used in the 1990s
In the United States 0 0.5 1 1.5 2 1880 1900 1920 1940 1960 1980 2000 2020 Girls 1999 Boys 1984 per 1,000 babies of that sex 61,152 babies given this name since 1968 At its height in 1999, about 1 in 522 girls 807 babies in 2020 The family of the name Other spellings: Cassady, Kassidy
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Meanings and histories are drawn from the study of names and their languages, each with a confidence rating; popularity figures come from official birth records. Name histories are a living field: if you know of a correction, we would be glad to hear it.