13-Letter Words Matching M_____R______

There are 50 13-letter words that match M_____R______. 18 are common words, such as MAINSTREAMING and MALNUTRITIONS. A rarer one is MYTHOGRAPHIES. In this set, I is the most frequent open letter (41 words). 16 words contain a doubled letter.

Full list 50

Common words

mainstreamingmalnutritionsmammographiesmeritoriouslymetamorphismsmetamorphosedmetamorphosesmetamorphosismicroorganismmimeographingministrationsmisaddressing
mainstreamingmalnutritionsmammographiesmeritoriouslymetamorphismsmetamorphosedmetamorphosesmetamorphosismicroorganismmimeographingministrationsmisaddressingmisapprehendsmisrepresentsmoneygrubbersmoneygrubbingmonochromaticmousetrappingmatriarchatesmetrorrhagiasmisimpressionmagistraticalmagistraturesmediterraneanmegakaryocytemetacercariaemetacercarialmetachromaticmetamericallymethacrylatesmethotrexatesmicrobrewingsmicrocrystalsmicrographicsmicrographingmicroprogramsmisappraisalsmisattributedmisattributesmonochromatormonochromistsmonomorphemicmonomorphismsmouthbreedersmultibranchedmultiorgasmicmultitrackingmultitrillionmythographersmythographies

About this list

Words
50 (18 common words)
Common example
mainstreaming
Rare example
mythographies
Doubled letters
16
Ending in S
25
Most frequent letter
I (41)

Questions

How many 13-letter words matching m_____r______ are there?

50. 18 of them are common words.

What is a common example?

MAINSTREAMING is among the common words in this set.