12-Letter Words Matching _______N_N__

There are 29 12-letter words that match _______N_N__. 12 are common words, such as APPURTENANCE and CHRISTENINGS. A rarer one is UNDERTENANTS. In this set, I is the most frequent open letter (25 words). 5 words contain a doubled letter.

Full list 29

Common words

appurtenancechristeningscomplainantscontaminantsdeterminantsimpermanenceimpertinenceincontinenceinterliningspredominancequestioningstobogganings
appurtenancechristeningscomplainantscontaminantsdeterminantsimpermanenceimpertinenceincontinenceinterliningspredominancequestioningstobogganingsimpermanencymicrofinancepredominancyscuppernongssubdominantsunderliningsantiozonantsappurtenantsbaserunningsimpertinencyinconsonanceincontinencymarathoningsnondominantsnonruminantsrecombinantsundertenants

About this list

Words
29 (12 common words)
Common example
appurtenance
Rare example
undertenants
Doubled letters
5
Ending in S
18
Most frequent letter
I (25)

Questions

How many 12-letter words matching _______n_n__ are there?

29. 12 of them are common words.

What is a common example?

APPURTENANCE is among the common words in this set.