[MSS]

Originally Posted by Number 6

A sobriquet, or soubriquet, is a nickname, sometimes assumed, but often given by another, that is descriptive. A sobriquet is distinct from a pseudonym, as it is typically a familiar name used in place of a real name, without the need of explanation, and it often becomes more familiar than the original name.

So, in a word, totally irrelevant in the context here but is long and sounds impressive!