9-Letter Words Containing MMU

There are 21 9-letter words that contain MMU. 11 are common words, such as COMMUNING and COMMUNION. A rarer one is NONIMMUNE. In this set, I is the most frequent open letter (17 words). 21 words contain a doubled letter.

Full list 21

communingcommunioncommunismcommunistcommunitycommuterscommutingimmunizedimmunizesimmutableimmutablycommunizecommutatecommutualnummulitecommunardcommuniseimmunisedimmunisesimmunogennonimmune

About this list

Words
21 (11 common words)
Common example
communing
Rare example
nonimmune
Doubled letters
21
Ending in S
3
Most frequent letter
I (17)

Questions

How many 9-letter words containing mmu are there?

21. 11 of them are common words.

What is a common example?

COMMUNING is among the common words in this set.