15-Letter Words Matching M_____R________

There are 22 15-letter words that match M_____R________. 10 are common words, such as MERITORIOUSNESS and MICROPROCESSORS. A rarer one is MONTMORILLONITE. In this set, I is the most frequent open letter (22 words). 14 words contain a doubled letter.

Full list 22

meritoriousnessmicroprocessorsmilitarizationsmisapprehendingmisapprehensionmisappropriatedmisappropriatesmisrepresentingmultiprocessingmultiprocessorsmalnourishmentsmisapprehensivemischaracterizemagistraticallymegacorporationmetamorphicallymicroprojectionmicroprojectorsmisattributionsmiscorrelationsmonochromatismsmontmorillonite

About this list

Words
22 (10 common words)
Common example
meritoriousness
Rare example
montmorillonite
Doubled letters
14
Ending in S
10
Most frequent letter
I (22)

Questions

How many 15-letter words matching m_____r________ are there?

22. 10 of them are common words.

What is a common example?

MERITORIOUSNESS is among the common words in this set.