Addy

Addy is an English diminutive with medieval roots, traditionally derived from names beginning with Ad-, most commonly Ada or Adelaide for feminine use, and Adam or Adela for masculine use. Adelaide itself traces back to the Old High German name Adalheidis, meaning noble kind or noble type, while Adam comes from the Hebrew word meaning man or earth. The name was used in medieval England for both sexes and has persisted as an affectionate short form into modern times. Related forms include Addie, Ada, and Adelaide.