11-Letter Words Matching _____M_O___

There are 21 11-letter words that match _____M_O___. 10 are common words, such as CIRCUMPOLAR and CUSTOMHOUSE. A rarer one is VICTIMHOODS. 9 words contain a doubled letter.

Full list 21

circumpolarcustomhousediscomfortsdiscommodeddiscommodesdiscomposeddiscomposeshoneymoonedhoneymoonernincompoopschaulmoogracircumsolarencrimsonednontemporalcollembolannoncomposernoncompoundnonsymbolicsaltimboccatropomyosinvictimhoods

About this list

Words
21 (10 common words)
Common example
circumpolar
Rare example
victimhoods
Doubled letters
9
Ending in S
5

Questions

How many 11-letter words matching _____m_o___ are there?

21. 10 of them are common words.

What is a common example?

CIRCUMPOLAR is among the common words in this set.