: a member or supporter of a major British political group of the late 17th through early 19th centuries seeking to limit the royal authority and increase parliamentary power compare tory
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: an American favoring independence from Great Britain during the American Revolution
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: a member or supporter of an American political party formed about 1834 in opposition to the Jacksonian Democrats, associated chiefly with manufacturing, commercial, and financial interests, and succeeded about 1854 by the Republican party