12-Letter Words Matching _____M_U____

There are 23 12-letter words that match _____M_U____. 5 are common words, such as AUTOIMMUNITY and CLOSEMOUTHED. A rarer one is SUBCOMMUNITY. In this set, O is the most frequent open letter (21 words). 6 words contain a doubled letter.

Full list 23

autoimmunityclosemouthedmealymouthedsomnambulismsomnambulistcircumfusingcircumnutatenoctambulismnoctambulistnoctambulousnoncommunistprocommunismprocommunistsomnambulantsomnambulatebeglamouringcircumfusionmiscomputingnoncommunityprecomputersprecomputingscaramouchessubcommunity

About this list

Words
23 (5 common words)
Common example
autoimmunity
Rare example
subcommunity
Doubled letters
6
Ending in S
3
Most frequent letter
O (21)

Questions

How many 12-letter words matching _____m_u____ are there?

23. 5 of them are common words.

What is a common example?

AUTOIMMUNITY is among the common words in this set.