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Meaning and name origin
Kay \kay\ as a boy's name (also used as girl's name Kay), is of Latin and Old Welsh origin, and the meaning of Kay is "happy, rejoicing". From Gaius. Ancient name borne, in legend, by a knight of the Round Table. Now more common as a woman's name.
Kay is not a popular first name for males but a very popular surname or last name for all people (#1508 out of 88799) (2000 U.S. Census).
Displayed below is the baby names popularity of Kay name for boys (2012 statistics). Compare Kay with its variant forms and related boy baby names.
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