12-Letter Words Matching ______S___O_

There are 21 12-letter words that match ______S___O_. 8 are common words, such as CHIAROSCUROS and CIVILISATION. A rarer one is URBANISATION. In this set, I is the most frequent open letter (20 words). 3 words contain a doubled letter.

Full list 21

chiaroscuroscivilisationcompensationcondensationconquistadorconversationdispensationdisquisitionmalversationreimpositionstigmasterolthermosiphoncolonisationdispossessorinspissationnonclassroomoptimisationorganisationpostpositionunionisationurbanisation

About this list

Words
21 (8 common words)
Common example
chiaroscuros
Rare example
urbanisation
Doubled letters
3
Ending in S
1
Most frequent letter
I (20)

Questions

How many 12-letter words matching ______s___o_ are there?

21. 8 of them are common words.

What is a common example?

CHIAROSCUROS is among the common words in this set.