[ muhmp-suh-muh s ]
/ ˈmʌmp sə məs /
noun, plural mump·si·mus·es for 2.
Origin of mumpsimus
1520–30; 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for mumpsimus
Mumpsimus, mump′si-mus, n. an error to which one clings after it has been thoroughly exposed.
We are not going to change our old 'mumpsimus' for anybody's new 'sumpsimus.'Res Judicat|Augustine Birrell
Mr. Beckford called the beast, or reptile, a mumpsimus (sic).Recollections of the late William Beckford|Henry Venn Lansdown