15-Letter Words Matching _____N____N____

There are 13 15-letter words that match _____N____N____. 1 are common words, such as INTERNATIONALLY and COMPUNCTIONLESS. A rarer one is PREPONDERANCIES. In this set, I is the most frequent open letter (12 words). 5 words contain a doubled letter.

Full list 13

internationallycompunctionlessconjunctionallydysfunctionallygluconeogenesisglyconeogenesisintransigenciesmillenarianismsnonconfidentialoverinfluentialgluconeogenesesplatinocyanidespreponderancies

About this list

Words
13 (1 common words)
Common example
internationally
Rare example
preponderancies
Doubled letters
5
Ending in S
8
Most frequent letter
I (12)

Questions

How many 15-letter words matching _____n____n____ are there?

13. 1 of them are common words.

What is a common example?

INTERNATIONALLY is among the common words in this set.