12-Letter Words Matching ____M_U_____

There are 13 12-letter words that match ____M_U_____. 4 are common words, such as ENORMOUSNESS and PERAMBULATED. A rarer one is INCOMPUTABLY. In this set, A is the most frequent open letter (11 words). 6 words contain a doubled letter.

Full list 13

enormousnessperambulatedperambulatesperambulatorincommutableincomputableinfamousnessvenomousnessdreamfulnessfunambulismsfunambulistsincommutablyincomputably

About this list

Words
13 (4 common words)
Common example
enormousness
Rare example
incomputably
Doubled letters
6
Ending in S
7
Most frequent letter
A (11)

Questions

How many 12-letter words matching ____m_u_____ are there?

13. 4 of them are common words.

What is a common example?

ENORMOUSNESS is among the common words in this set.