15-Letter Words Matching _______SO______

There are 12 15-letter words that match _______SO______. 4 are common words, such as POSTCONSONANTAL and QUARRELSOMENESS. A rarer one is TRYPANOSOMIASES. In this set, S is the most frequent open letter (11 words). 4 words contain a doubled letter.

Full list 12

postconsonantalquarrelsomenessunwholesomenessventuresomenesshexylresorcinolschistosomiasesschistosomiasisstereoisomerismtrypanosomiasissuperabsorbentstroublesomenesstrypanosomiases

About this list

Words
12 (4 common words)
Common example
postconsonantal
Rare example
trypanosomiases
Doubled letters
4
Ending in S
9
Most frequent letter
S (11)

Questions

How many 15-letter words matching _______so______ are there?

12. 4 of them are common words.

What is a common example?

POSTCONSONANTAL is among the common words in this set.