Of or pertaining to isolationism or an advocate thereof.(adjective)
One who advocates or supports isolationism.(noun)
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Use "isolationist" in a sentence
"This gave rise to what has been called the "isolationist" - strand in the Republican Party, although the term "isolation" - is not by itself proper."
"There are those, apparently including Brooks, who will now try to convince the American public that the only alternative to Bushian extremism is left-wing extremism--which will be described as isolationist, protectionist and militantly secularist."
"BLITZER: In your speech, you're very critical of Governor Bush's international policy, but you don't really believe he is part of that so-called isolationist wing of the Republican Party as you look at his remarks and you look at the advisers that have surrounded him?"