11-Letter Words Matching ____N_____M

There are 17 11-letter words that match ____N_____M. 5 are common words, such as ABSENTEEISM and COLONIALISM. A rarer one is RETINACULUM. In this set, I is the most frequent open letter (17 words). 2 words contain a doubled letter.

Full list 17

absenteeismcolonialismincunabulumromanticismvoluntarismadventurismdefiniendumimmanentisminfantilismnonunionismostensoriumpedanticismperineuriumprognathismorientalismpleinairismretinaculum

About this list

Words
17 (5 common words)
Common example
absenteeism
Rare example
retinaculum
Doubled letters
2
Ending in S
0
Most frequent letter
I (17)

Questions

How many 11-letter words matching ____n_____m are there?

17. 5 of them are common words.

What is a common example?

ABSENTEEISM is among the common words in this set.