13-Letter Words Matching ______A___A__

There are 20 13-letter words that match ______A___A__. 10 are common words, such as ANTICOAGULANT and BACCALAUREATE. A rarer one is ULTRARADICALS. In this set, T is the most frequent open letter (19 words). 3 words contain a doubled letter.

Full list 20

anticoagulantbaccalaureatedecontaminateintermarriagenortheastwardrecontaminatesoutheastwardsupernaturalssupersaturateundercarriagearchdeaconatedecontaminanteusporangiateinterlaminateinterlanguageoverelaborateprotolanguagedeuteranomalymicrohabitatsultraradicals

About this list

Words
20 (10 common words)
Common example
anticoagulant
Rare example
ultraradicals
Doubled letters
3
Ending in S
3
Most frequent letter
T (19)

Questions

How many 13-letter words matching ______a___a__ are there?

20. 10 of them are common words.

What is a common example?

ANTICOAGULANT is among the common words in this set.