mugwump

1. (chiefly humorous) A (male) leader; an important (male) person.Synonyms: baron, big cheese, big enchilada, big gun, big kahuna, big man, big name, big noiseAntonyms: important person, big cheese, big hitter, big wheel, somebodyhumorous

2. (politics)UShistorical

3. (politics)Examples: "The story of the capture of Vicksburg is the old, old story of failure turned into success, by which man is made immortal. It involves the history of a general who never retraced his steps, who cared neither for mugwump murmurs nor political cabals, who took both blame and praise with equanimity."; "After them came the politician, who said there was only one purpose in Nature, and that was to get him into parliament. I told him I did not care whether he got into parliament or not; so he called me Mugwump and went his way."broadly

4. (politics)AustraliaUSbroadly

5. (Australia, US, by extension, colloquial, somewhat derogatory) A person who stays neutral or non-committal; a fence sitter; also, a person who maintains an aloof and often self-important demeanour.Examples: "Anthea hasn't a notion in her head but to vamp a lot of silly mugwumps. She's set her heart on that tennis bloke [...] whom the papers are making such a fuss about."AustraliaUSbroadlycolloquialderogatory

6. (Australia) A foolish person.Australia