familynickname
A family nickname is a familiar or endearing name used within a family group, distinct from an individual's given name. These names often originate from a child's mispronunciation of their given name, a physical characteristic, a personality trait, or a shared family memory or inside joke. They can also be a diminutive form of a given name, such as "Lulu" for Louise or "Billy" for William.
The use of family nicknames serves several purposes. They can foster a sense of intimacy and belonging,
The creation and use of family nicknames are largely informal and organic. There are no strict rules