Jack
[dʒæk]Meaning
a medieval diminutive of John, later an independent name
Background Story
Jack comes from Jackin, an earlier Jankin, a medieval diminutive of John, with possible early influence from the unrelated French name Jacques. During the Middle Ages it was very common and became a slang word meaning "man". In the United Kingdom it has been given more often than John since the 1990s, and was the most popular name for boys from 1996 to 2008.
Variations
Jackson, Jacques, Jackie
Related Names
Jake
Medieval variant of Jack, also a short form of Jacob and James
Johnny
Diminutive of John; an English personal name used since the 16th century.
Gary
From a surname derived from a Norman short form of Old German names with ger, "spear"
Jace
A form of the name Jason, which means 'to heal'
Jacks
Recorded as a given name in English, where it is rare and masculine
Jaq
Diminutive of the male given name Jacques; used as a given name in English and Gallo
Jeff
Derived from the Old High German name 'Gisulf', meaning 'pledge of peace'.
Jim
Medieval diminutive of James
Jimbo
A given name, often short for James; also a Japanese surname and a Swahili word meaning state or province.