isolationist

The definition of an isolationist is a person who believes in keeping to one's own affairs rather than becoming involved in the affairs of others.

(noun)

A person who believes that the United States should mind its own business and not interfere with things going on in other countries is an example of an isolationist.

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See isolationist in Webster's New World College Dictionary

noun

a person who believes in or advocates isolation; specif., one who opposes the involvement of his or her own country in international alliances, agreements, etc.

adjective

of isolationists or their policy

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