Non- prefix 1. Not doing; not involved with: (I.e. nonaggression) 2. Not of the kind or class described: (I.e. nonbeliever) •also forming nouns used attributively(such as "nonunion") 3. Not of the importance implied: (I.e. nonissue) 4. [u]A lack of: (I.e. nonsense)[/u] Using the fourth possibly usage of the prefix, it would imply a lack of existence.