15-Letter Words Matching ____O_____M____

There are 12 15-letter words that match ____O_____M____. 3 are common words, such as ACKNOWLEDGMENTS and DISCONTENTMENTS. A rarer one is NEUROANATOMISTS. In this set, T is the most frequent open letter (12 words). 1 words contain a doubled letter.

Full list 12

acknowledgmentsdiscontentmentsdiscouragementsdisconcertmentsmalnourishmentsmicromillimeterradiomicrometermicroanatomicalmicrophotometermicrophotometryneuroanatomicalneuroanatomists

About this list

Words
12 (3 common words)
Common example
acknowledgments
Rare example
neuroanatomists
Doubled letters
1
Ending in S
6
Most frequent letter
T (12)

Questions

How many 15-letter words matching ____o_____m____ are there?

12. 3 of them are common words.

What is a common example?

ACKNOWLEDGMENTS is among the common words in this set.