15-Letter Words Matching _________A__A__

There are 12 15-letter words that match _________A__A__. 4 are common words, such as DISCIPLINARIANS and LATITUDINARIANS. A rarer one is UNIFORMITARIANS. In this set, I is the most frequent open letter (12 words). 1 words contain a doubled letter.

Full list 12

disciplinarianslatitudinariansseptuagenariansvaletudinarianscounterclaimantsesquipedaliansnonutilitarianspredestinarianspremillenarianssolitudinarianssubproletariatsuniformitarians

About this list

Words
12 (4 common words)
Common example
disciplinarians
Rare example
uniformitarians
Doubled letters
1
Ending in S
11
Most frequent letter
I (12)

Questions

How many 15-letter words matching _________a__a__ are there?

12. 4 of them are common words.

What is a common example?

DISCIPLINARIANS is among the common words in this set.