15-Letter Words Matching ____N__N_______

There are 12 15-letter words that match ____N__N_______. 3 are common words, such as DISENTANGLEMENT and GEOENGINEERINGS. A rarer one is RECONCENTRATION. 5 words contain a doubled letter.

Full list 12

disentanglementgeoengineeringsinconveniencingbioengineeringsbelongingnessesdeconcentratingdeconcentrationdemandingnessesinconvenienciesnonengineeringsreconcentratingreconcentration

About this list

Words
12 (3 common words)
Common example
disentanglement
Rare example
reconcentration
Doubled letters
5
Ending in S
6

Questions

How many 15-letter words matching ____n__n_______ are there?

12. 3 of them are common words.

What is a common example?

DISENTANGLEMENT is among the common words in this set.