14-Letter Words Matching A_____R_______

There are 22 14-letter words that match A_____R_______. 5 are common words, such as ALLITERATIVELY and AMATEURISHNESS. A rarer one is ANTITERRORISTS. In this set, I is the most frequent open letter (20 words). 12 words contain a doubled letter.

Full list 22

alliterativelyamateurishnessantiperspirantappropriationsasynchronouslyaccelerometersachondroplasiaamphiarthrosisacceleratinglyadrenergicallyagroforestriesallegorizationamphiprostylesantiarrhythmicanticarcinogenanticorrosivesanticorruptionantiderivativeantiformalistsantiparasiticsantiterrorismsantiterrorists

About this list

Words
22 (5 common words)
Common example
alliteratively
Rare example
antiterrorists
Doubled letters
12
Ending in S
11
Most frequent letter
I (20)

Questions

How many 14-letter words matching a_____r_______ are there?

22. 5 of them are common words.

What is a common example?

ALLITERATIVELY is among the common words in this set.