The crossword solution for the term 'Prefix with God or John' is DEMI. The prefix demi- is derived from the French language and means 'HALF'. It is commonly used to describe something that is only partially related to the original concept, such as a demigod or a demijohn. Demi- can also be used to refer to a person who is only partially related to a certain group, such as a demigod or a demigod.