What is the correct term for a self given nickname?

Question

I always forget. /;

Answer 1

No wonder you might forget, there are several ,
pseudonym comes to mind and alias, Nom de plume, nom de guerre, A.K.A., pen name ,stage name or fake name, née, ne, moniker. Which of these is the one you forget.
Then again maybe you are thinking of a diminutive of a name . Bob for Robert
or Trish for Patricia , Diminutive is that word for that kind of self given nickname.
There are so many kinds of nicknames and ways of nicking names and naming Nicks
....oh I forget the question

Answer 2

A nickname is a name of a person or thing other than its proper name. It may either substitute or be added to the proper name. It may be a familiar or truncated form of the proper name, such as Bob, Bobby, Rob, Robbie, Robin, and Bert for Robert.

The term hypocoristic or "pet name" is used to refer to a nickname of affection between those in love or with a close emotional bond, compared with a term of endearment. The term diminutive name refers to nicknames that convey smallness of the names, e.g., referring to children. The distinction between the two is often blurred.

As a concept, it is distinct from both pseudonym and stage name, and also from title (for example, City of Fountains), although there may be overlap in these concepts.

A nickname is sometimes considered desirable, symbolising a form of acceptance, but can often be a form of ridicule.

Etymology: 1440, misdivision of ekename (1303), an eke name, literally "an additional name," from Old English eaca "an increase," related to eacian "to increase".

In Viking societies, many people had nicknames heiti, viðrnefni or uppnefi which were used in addition to, or instead of their family names. In some circumstances the giving of a nickname had a special status in Viking society in that it created a relationship between the name maker and the recipient of the nickname, to the extent that the creation of a nickname also often entailed a formal ceremony and an exchange of gifts.

Answer 3

The only term I can think of that comes close is pseudonym. Is that the word you're looking for?

Answer 4

AKA alias pseudonym penname nickname
preferred address

Answer 5

Sobriquet.

Answer 6

masterbation.