13-Letter Words Matching ____S___O____

There are 26 13-letter words that match ____S___O____. 10 are common words, such as AMBASSADORIAL and FORESHADOWING. A rarer one is TRANSISTORISE. In this set, I is the most frequent open letter (23 words). 7 words contain a doubled letter.

Full list 26

Common words

ambassadorialforeshadowinghomeschoolingillustriouslyindustriouslyovershadowingphraseologiesschussboomerstransistorizetransitioningkinesiologistlegislatorial
ambassadorialforeshadowinghomeschoolingillustriouslyindustriouslyovershadowingphraseologiesschussboomerstransistorizetransitioningkinesiologistlegislatorialnumismatologyphraseologistrepositioningterpsichoreantransitionaryaldosteronismforeshadowershomeschoolerskinesiologiesnecessitouslyoppositionistoverseriouslysemasiologiestransistorise

About this list

Words
26 (10 common words)
Common example
ambassadorial
Rare example
transistorise
Doubled letters
7
Ending in S
6
Most frequent letter
I (23)

Questions

How many 13-letter words matching ____s___o____ are there?

26. 10 of them are common words.

What is a common example?

AMBASSADORIAL is among the common words in this set.