14-Letter Words Matching M_R___________

There are 20 14-letter words that match M_R___________. 5 are common words, such as MERCHANDISINGS and MERETRICIOUSLY. A rarer one is MYRMECOPHILOUS. In this set, I is the most frequent open letter (18 words). 5 words contain a doubled letter.

Full list 20

merchandisingsmeretriciouslymirthfulnessesmoralisticallymortificationsmercantilisticmercaptopurinemercifulnessesmiraculousnessmorphophonemesmyrmecophagousmariculturistsmartyrizationsmartyrologistsmercerizationsmerchandizingsmorganaticallymyrmecologicalmyrmecologistsmyrmecophilous

About this list

Words
20 (5 common words)
Common example
merchandisings
Rare example
myrmecophilous
Doubled letters
5
Ending in S
14
Most frequent letter
I (18)

Questions

How many 14-letter words matching m_r___________ are there?

20. 5 of them are common words.

What is a common example?

MERCHANDISINGS is among the common words in this set.