mumpsimus /mumpˈsi-məs/

1. A view or opinion stubbornly held, even when shown to be misguided
2. A person holding such a view, or one adhering stubbornly to old ways

• mixed language
• mixed languages
• mixedly
• mixed marriage
• mixed marriages
• mixed martial arts
• mixed-media
• mixed metaphor
• mixed metaphors
• mixedness
• mixednesses
• mixed number
• mixed numbers
• mixed train
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• mixed-up
• mixed up in
• mixed up with
• mixen
• mixens
• mixer
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• mixer tap
• mixes
• mixier