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

• cathisma
• cathismas
• cathodal
• cathode
• cathode-ray oscillograph
• cathode-ray oscillographs
• cathode rays
• cathode-ray tube
• cathode-ray tubes
• cathodes
• cathodic
• cathodic protection
• cathodograph
• cathodographer
• cathodographers
• cathodographies
• cathodographs
• cathodography
• cathodoluminescence
• cathole
• catholes
• catholic
• Catholic
• catholically
• Catholic and Apostolic Church