14-Letter Words Matching ________N_N___

There are 20 14-letter words that match ________N_N___. 4 are common words, such as COLORBLINDNESS and ENTERTAININGLY. A rarer one is UPSTANDINGNESS. In this set, E is the most frequent open letter (20 words). 13 words contain a doubled letter.

Full list 20

colorblindnessentertaininglysubcontinentalunpleasantnessepicontinentalincoherentnessunassumingnessbenevolentnessconvincingnessforebodingnessfraudulentnessintolerantnessoverdominancespreconsonantalsupereminencessupereminentlyunavailingnessunbecomingnessunchangingnessupstandingness

About this list

Words
20 (4 common words)
Common example
colorblindness
Rare example
upstandingness
Doubled letters
13
Ending in S
15
Most frequent letter
E (20)

Questions

How many 14-letter words matching ________n_n___ are there?

20. 4 of them are common words.

What is a common example?

COLORBLINDNESS is among the common words in this set.