15-Letter Words Matching _N____S________

There are 18 15-letter words that match _N____S________. 4 are common words, such as INACCESSIBILITY and INADMISSIBILITY. A rarer one is UNIVERSALNESSES. In this set, I is the most frequent open letter (18 words). 5 words contain a doubled letter.

Full list 18

inaccessibilityinadmissibilityunderestimatingunderestimationancylostomiasisankylostomiasisindigestibilityintransigenciesancylostomiasesankylostomiasesantifashionableantihistaminicsantiobscenitiesinexcusablenessinterestingnessintransigeancesintransigeantlyuniversalnesses

About this list

Words
18 (4 common words)
Common example
inaccessibility
Rare example
universalnesses
Doubled letters
5
Ending in S
11
Most frequent letter
I (18)

Questions

How many 15-letter words matching _n____s________ are there?

18. 4 of them are common words.

What is a common example?

INACCESSIBILITY is among the common words in this set.