Not constituting or belonging to a state; not characterised by the institutional power or authority of an organized government.

A sociopolitical entity other than a state.

(computing) Not stateful; stateless.

unstated

plural of nonstate

That which is not a statement.

plural of nonstatement

(object-oriented programming) Not static.

An organization or other group whose behavior significantly affects political, economic, or strategic interactions between countries or major events within a country, but that is not itself a recognized country or a representative of a recognized country.

plural of nonstate actor