14-Letter Words Matching ________N_M___

There are 15 14-letter words that match ________N_M___. 6 are common words, such as DISAPPOINTMENT and DISCONTENTMENT. A rarer one is SUPERPHENOMENA. In this set, I is the most frequent open letter (14 words). 2 words contain a doubled letter.

Full list 15

disappointmentdiscontentmentdisenchantmentmacroeconomicsmicroeconomicsthermodynamicsintertwinementmacroeconomistoverrefinementpneumodynamicspsychodynamicschromodynamicscytotaxonomiessemiautonomoussuperphenomena

About this list

Words
15 (6 common words)
Common example
disappointment
Rare example
superphenomena
Doubled letters
2
Ending in S
8
Most frequent letter
I (14)

Questions

How many 14-letter words matching ________n_m___ are there?

15. 6 of them are common words.

What is a common example?

DISAPPOINTMENT is among the common words in this set.