15-Letter Words Matching __________NA___

There are 35 15-letter words that match __________NA___. 10 are common words, such as BIDIRECTIONALLY and INSTITUTIONALLY. A rarer one is UNTRADITIONALLY. In this set, I is the most frequent open letter (34 words). 24 words contain a doubled letter.

Full list 35

Common words

bidirectionallyinstitutionallyinternationallyprepositionallyunconditionallyunexceptionableunexceptionablyunexceptionallyunintentionallyunobjectionablecomputationallycoeducationally
bidirectionallyinstitutionallyinternationallyprepositionallyunconditionallyunexceptionableunexceptionablyunexceptionallyunintentionallyunobjectionablecomputationallycoeducationallycongressionallyconjugationallyconjunctionallydimenhydrinatesdysfunctionallygravitationallyinspirationallyinterpersonallyobservationallyantifashionablecompositionallyepiphenomenallyhemagglutinatedhemagglutinatesindisciplinableinformationallylignosulfonatesnonrecombinantsorientationallyoveropinionatedpharmacodynamicpseudopregnancyuntraditionally

About this list

Words
35 (10 common words)
Common example
bidirectionally
Rare example
untraditionally
Doubled letters
24
Ending in S
4
Most frequent letter
I (34)

Questions

How many 15-letter words matching __________na___ are there?

35. 10 of them are common words.

What is a common example?

BIDIRECTIONALLY is among the common words in this set.