14-Letter Words Matching ____NA________

There are 12 14-letter words that match ____NA________. 2 are common words, such as DEBONAIRNESSES and ORDINARINESSES. A rarer one is UNTENABILITIES. 4 words contain a doubled letter.

Full list 12

debonairnessesordinarinessespleonasticallyaeronauticallyalienabilitiescleanabilitiesdetonabilitiespregnabilitiesrecanalizationstainabilitiestrainabilitiesuntenabilities

About this list

Words
12 (2 common words)
Common example
debonairnesses
Rare example
untenabilities
Doubled letters
4
Ending in S
9

Questions

How many 14-letter words matching ____na________ are there?

12. 2 of them are common words.

What is a common example?

DEBONAIRNESSES is among the common words in this set.