12-Letter Words Matching _____M____S_

There are 14 12-letter words that match _____M____S_. 4 are common words, such as SOMNAMBULISM and SOMNAMBULIST. A rarer one is PHRAGMOPLAST. In this set, O is the most frequent open letter (13 words). 5 words contain a doubled letter.

Full list 14

somnambulismsomnambulistuncommonnessunseemlinessaeroembolismeconometristnoctambulismnoctambulistnoncommunistprocommunismprocommunistsociometristcustomshousephragmoplast

About this list

Words
14 (4 common words)
Common example
somnambulism
Rare example
phragmoplast
Doubled letters
5
Ending in S
2
Most frequent letter
O (13)

Questions

How many 12-letter words matching _____m____s_ are there?

14. 4 of them are common words.

What is a common example?

SOMNAMBULISM is among the common words in this set.