To rejoice
Caio is a classic Portuguese and Brazilian name derived from the Roman family name Caius. It stems from the Latin word 'gaudere', which means to rejoice or be glad. While ancient in its roots, it maintains a fresh, energetic feel in modern Lusophone cultures.
About 35 boys were named Caio in 2025.
US births per 5-year period, 1990–present (SSA data).
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