12-Letter Words Matching ___M___O____

There are 18 12-letter words that match ___M___O____. 7 are common words, such as COMMODIOUSLY and FLAMEPROOFED. A rarer one is TRIMETROGONS. In this set, I is the most frequent open letter (14 words). 4 words contain a doubled letter.

Full list 18

commodiouslyflameproofedhaemoglobinsharmoniouslypromontoriessummerhousestremendouslychemotropismisometropiasonomasiologyflameprooferkremlinologynonmicrobialsubmicrogramthymectomiesthymectomizetrimethoprimtrimetrogons

About this list

Words
18 (7 common words)
Common example
commodiously
Rare example
trimetrogons
Doubled letters
4
Ending in S
6
Most frequent letter
I (14)

Questions

How many 12-letter words matching ___m___o____ are there?

18. 7 of them are common words.

What is a common example?

COMMODIOUSLY is among the common words in this set.