The term 'Member of a Secret Order' can be summarized by two crossword solutions: Mason (5 letters) and Freemason (9 letters). Mason is a term used to refer to a member of the fraternal organization known as Freemasonry, which is a secret society that has been around since the late 17th century. Freemasons are known for their charitable works and their commitment to moral and ethical values. Freemasonry is a worldwide organization with millions of members.