13-Letter Words Matching ____S__O_____

There are 23 13-letter words that match ____S__O_____. 10 are common words, such as CRISSCROSSING and EAVESDROPPERS. A rarer one is TRANSTHORACIC. In this set, I is the most frequent open letter (17 words). 11 words contain a doubled letter.

Full list 23

crisscrossingeavesdropperseavesdroppingglassblowingshomeschoolingschussboomerssecessioniststrapshootingsunfashionableunfashionablycatastrophismcatastrophistclaustrophobecounselorshipobsessionallysecessionismssinistrocularhomeschoolersparasitologicphrasemongerspostsecondarytenosynovitistransthoracic

About this list

Words
23 (10 common words)
Common example
crisscrossing
Rare example
transthoracic
Doubled letters
11
Ending in S
9
Most frequent letter
I (17)

Questions

How many 13-letter words matching ____s__o_____ are there?

23. 10 of them are common words.

What is a common example?

CRISSCROSSING is among the common words in this set.