What does Billy mean?
Billy \b(il)-ly\ as a name for boys (also used less regularly as girls' name Billy) is of English and Old German origin. Billy is a derivative of Bill (English): nickname for William. A popular choice for a given name for baby boys.
Billy▼ has 1 variant: Billie▼.
Billy▼ has 32 more different forms via Bill, William: Bille, Byll, Guglielmo, Guillaume, Guillermo▼, Liam▲, Vilhelm, Villem, Wilek, Wiley▼, Wilhelm▼, Wilhelmus, Wilkes, Wilkie, Wilkinson, Will▼, Willem, Willhelmus, Willi, Williams▼, Williamson, Willie▼, Willis▼, Willkie, Wills, Willson, Willy, Wilmer▼, Wilmot, Wilmott, Wilson▼ and Wim.
Billy is a very prominent first name for men (#73 out of 1220, Top 6%) and also a very prominent surname for all people (#8671 out of 88799, Top 10%). (2000 U.S. Census)
Displayed below is the birth name popularity of Billy for boys. Billy reached its peak rank of #20 in the U.S. during 1930-1939, and is presently at #794. (2014 Birth Statistics)
Below is a charted comparison of the usage of Billy and affiliated names. Bill, Billie, Guillermo (#678 a year ago), Liam (#2), Wiley, Wilhelm, Will (#763), William (#5), Williams, Willie (#722), Willis, Willy, Wilmer and Wilson (#594) are the prominent related forms of Billy (#794 a year ago) listed in the Top 1000. These boy names were at the top of their popularity during 1920-1929 and are now much less popular, with versions such as Billy, Guillermo, Will, Willie and Wilson falling out of style. Liam (#2) is the most contemporarily stylish birth name in this compilation. (2014 Birth Statistics)