13-Letter Words Matching A__________A_

There are 33 13-letter words that match A__________A_. 10 are common words, such as AMBASSADORIAL and ANTIBACTERIAL. A rarer one is AUTORADIOGRAM. In this set, I is the most frequent open letter (32 words). 9 words contain a doubled letter.

Full list 33

Common words

ambassadorialantibacterialantimicrobialarcheologicalarchitecturalarithmeticianassemblywomanastronauticalastrophysicalauthoritarianacciaccaturasachlorhydrias
ambassadorialantibacterialantimicrobialarcheologicalarchitecturalarithmeticianassemblywomanastronauticalastrophysicalauthoritarianacciaccaturasachlorhydriasaerodynamicalanaphrodisiacantichristianantidiarrhealaphrodisiacalapocalypticalappoggiaturasarchidiaconalassociationalautographicalabstractionalacquisitionalaggregationalailurophobiasalchemisticalanticlassicalantipoliticalarbitrationalattributionalautecologicalautoradiogram

About this list

Words
33 (10 common words)
Common example
ambassadorial
Rare example
autoradiogram
Doubled letters
9
Ending in S
4
Most frequent letter
I (32)

Questions

How many 13-letter words matching a__________a_ are there?

33. 10 of them are common words.

What is a common example?

AMBASSADORIAL is among the common words in this set.