noun, plural mumpsimuses for 2.
adherence to or persistence in an erroneous use of language
, memorization, practice, belief, etc., out of habit or obstinacy (opposed to sumpsimus
from a story, which perhaps originated with Erasmus, of an illiterate priest who said mumpsimus
rather than sūmpsimus
(1st plural perfect indicative of Latin sūmere
to pick up; see consume
) while reciting the liturgy, and refused to change the word when corrected