13-Letter Words Matching _X_A_________

There are 12 13-letter words that match _X_A_________. 5 are common words, such as EXPANSIONISMS and EXPANSIONISTS. A rarer one is EXSANGUINATES. In this set, E is the most frequent open letter (12 words). 2 words contain a doubled letter.

Full list 12

expansionismsexpansionistsexpansivenessexpatriationsoxyacetylenesexpandabilityexhaustlesslyexpansibilityexpansivitiesexpatriatismsexsanguinatedexsanguinates

About this list

Words
12 (5 common words)
Common example
expansionisms
Rare example
exsanguinates
Doubled letters
2
Ending in S
8
Most frequent letter
E (12)

Questions

How many 13-letter words matching _x_a_________ are there?

12. 5 of them are common words.

What is a common example?

EXPANSIONISMS is among the common words in this set.