sumpsimus

noun, plural sump·si·mus·es for 2.

adherence to or persistence in using a strictly correct term, holding to a precise practice, etc., as a rejection of an erroneous but more common form ( opposed to mumpsimus ).

a person who is obstinate or zealous about such strict correctness ( opposed to mumpsimus ).

Origin:
1540–50; see mumpsimus

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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WordNet

sumpsimus
noun
a correct expression that takes the place of a popular but incorrect expression; "he preferred his erroneous but pleasing mumpsimus to the correct sumpsimus"

WordNet® 3.0, © 2006 by Princeton University.
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00:10

Sumpsimus is always a great word to know.

So is quincunx. Does it mean:

a gadget; dingus; thingumbob.

an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.

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Matching Quote

"I see and hear daily that you of the Clergy preach one against another, teach one contrary to another, inveigh one against another without charity or discretion. Some be too stiff in their old mumpsimus, others be too busy and curious in their new sumpsimus. Thus all men almost be in variety and discord."

-Henry VIII

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