Also found in: Thesaurus, Wikipedia.
1. A person who acts independently or remains neutral, especially in politics.
2. often Mugwump A Republican who bolted the party in 1884, refusing to support presidential candidate James G. Blaine.
[Massachusett mugguomp, mummugguomp, war leader.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.