national

A subject of a nation.

“The diplomats were advised not to interact with any foreign nationals except on official duty.”

(usually in the plural) A tournament in which participants from all over the nation compete.

“After winning the regional tournament, the team advanced to the nationals.”

Of or having to do with a nation.

(by extension) Of or having to do with a country (sovereign state).

“Import tariffs were raised for the national interest.”