mumpsimus
Noun
Meaning
a traditional notion that is obstinately held although it is unreasonable
Source: WordNetSynonyms
fallacy
misunderstanding
misconception
misapprehension
misinterpretation
laxity
misconstruction
inexactness
sequitur
misjudgment
miscomputation
Antonyms
Hypernyms
Examples
he still holds to the old mumpsimus that a woman's place is in the kitchen