14-Letter Words Matching _X_________S__

There are 12 14-letter words that match _X_________S__. 5 are common words, such as EXHIBITIONISMS and EXHIBITIONISTS. A rarer one is EXTENDEDNESSES. 8 words contain a doubled letter.

Full list 12

exhibitionismsexhibitionistsexplicitnessesexpressionismsexpressionistsexophthalmosesuxoriousnessesexactingnessesexiguousnessesexophthalmusesexpectednessesextendednesses

About this list

Words
12 (5 common words)
Common example
exhibitionisms
Rare example
extendednesses
Doubled letters
8
Ending in S
12

Questions

How many 14-letter words matching _x_________s__ are there?

12. 5 of them are common words.

What is a common example?

EXHIBITIONISMS is among the common words in this set.