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

• jane
• Jane Doe
• Janeite
• janes
• JANET
• jangle
• jangled
• jangler
• janglers
• jangles
• janglier
• jangliest
• jangling
• janglings
• jangly
• Janian
• Janiform
• janissaries
• janissary
• janitor
• janitorial
• janitors
• janitorship
• janitorships
• janitress