A secret society is an organization that is typically exclusive and secretive, often with the purpose of furthering their own interests. The four crossword solutions for the term 'secret society' are Tong (4 letters), MAFIA (5 letters), Camorra (7 letters), and ORDER (5 letters). Tongs are Chinese criminal organizations that have been active in the United States since the mid-19th century. The MAFIA is a powerful organized crime syndicate originating in Italy. The Camorra is a Neapolitan criminal organization that has been active since the 18th century. The ORDER is a secret society that was founded in Germany in 1717.