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

• urochordate
• urochordates
• urochords
• urochrome
• urochromes
• Urodela
• urodelan
• urodelans
• urodele
• urodeles
• urodelous
• urodynamics
• urogenital
• urogenous
• urographic
• urographies
• urography
• urokinase
• urokinases
• urolagnia
• urolagnias
• urolith
• urolithiases
• urolithiasis
• urolithic