15-Letter Words Matching ______S_O______

There are 23 15-letter words that match ______S_O______. 8 are common words, such as COMPASSIONATELY and CONCESSIONAIRES. A rarer one is TRANSISTORISING. In this set, I is the most frequent open letter (21 words). 11 words contain a doubled letter.

Full list 23

compassionatelyconcessionairesdispassionatelyexpressionisticimpressionisticprofessionalismprofessionalizetransistorizingancylostomiasisankylostomiasiscommissionairesancylostomiasesankylostomiasescompassionatingconfessionalismconfessionalistecophysiologiesnonaristocraticoverdiscountingplethysmographsplethysmographypseudoscorpionstransistorising

About this list

Words
23 (8 common words)
Common example
compassionately
Rare example
transistorising
Doubled letters
11
Ending in S
9
Most frequent letter
I (21)

Questions

How many 15-letter words matching ______s_o______ are there?

23. 8 of them are common words.

What is a common example?

COMPASSIONATELY is among the common words in this set.