Wikipedia:Tip of the day/July 9
Neologisms are words and terms that have recently been "coined" and generally do not appear in any dictionary. Avoid using neologisms when creating articles on Wikipedia, unless they are part of the subject being covered and need to be explained (in such a case be sure to define the new words). Neologisms include words made up on the spot, and these should never be used in a Wikipedia article. Wikipedia relies on established English to explain its subjects. It is important that every word in Wikipedia can be understood by those who read it. This ensures that Wikipedia always conveys accessible and meaningful knowledge.