A fluent and prolific writer can be described as GLIB, ANON, Euler, Isaac, and REAMS. The term 'GLIB' means to be fluent and articulate in speech or writing. 'ANON' is a term used to describe an anonymous author. Leonhard Euler was a Swiss mathematician and physicist who wrote many influential works. Isaac Newton was an English mathematician and physicist who wrote the Principia Mathematica. REAMS is a term used to describe a large quantity of written material. All of these terms together describe someone who is a very skilled and productive writer.