12-Letter Words Matching _X________S_

There are 14 12-letter words that match _X________S_. 5 are common words, such as EXCURSIONIST and EXPANSIONISM. A rarer one is EXTENDEDNESS. In this set, E is the most frequent open letter (14 words). 6 words contain a doubled letter.

Full list 14

excursionistexpansionismexpansionistexplicitnessextortionistexiguousnessexobiologistuxoriousnessexactingnessexclusionistexopeptidaseexpatriatismexpectednessextendedness

About this list

Words
14 (5 common words)
Common example
excursionist
Rare example
extendedness
Doubled letters
6
Ending in S
6
Most frequent letter
E (14)

Questions

How many 12-letter words matching _x________s_ are there?

14. 5 of them are common words.

What is a common example?

EXCURSIONIST is among the common words in this set.