He is a mutton-headed old mugwump.
Source: tatoeba (6043118)
Ranked by relevance and common usage.
Keep "mugwump" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
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Choose a synonym only if it keeps the core idea of "mugwump" intact in the sentence you are editing.
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Review note: Synonym lists are ranked with lexical data and reviewed for practical writing value. Use the comparison notes, sentence evidence, and source labels together; a high-ranking synonym can still be wrong when the audience, register, or grammar changes.
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4 total sentences available.
He is a mutton-headed old mugwump.
Source: tatoeba (6043118)
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.
Source: wiktionary
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.
Source: wiktionary
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.
Source: wiktionary
Closest matches include anythingarian, apostate, backslider, backwardness, big boy.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.