Cay is a boy name with roots in Welsh and Latin culture. A spelling of the Welsh Cai, the name of Sir Kay of Arthurian legend, usually traced to the Latin Gaius, perhaps meaning 'to rejoice'.
The numerology number for Cay is 5, reflecting the personality traits and characteristics associated with this name.
Origin : welsh, latin
Gender : boy
Numerology : 5
Syllables : 1
Last updated 23 October 2026 · How we research names · Report a mistake
In numerology, the name Cay reduces to the number 5, which is most often linked to freedom, adventure, adaptability. A person carrying this vibration is often restless in the best way - curious about people and places, quick to learn, and energised by change rather than threatened by it.
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Names starting with C
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