10-Letter Words Matching N_____N___

There are 15 10-letter words that match N_____N___. 3 are common words, such as NARROWNESS and NIMBLENESS. A rarer one is NONWINNING. In this set, I is the most frequent open letter (12 words). 5 words contain a doubled letter.

Full list 15

narrownessnimblenessnondrinkernesciencesnewsmongernicotinismnigglinglynonjoindernucleonicsnativenessnoncountrynonearningnonjoinersnonsignersnonwinning

About this list

Words
15 (3 common words)
Common example
narrowness
Rare example
nonwinning
Doubled letters
5
Ending in S
7
Most frequent letter
I (12)

Questions

How many 10-letter words matching n_____n___ are there?

15. 3 of them are common words.

What is a common example?

NARROWNESS is among the common words in this set.