14-Letter Words Matching ______S___O___

There are 18 14-letter words that match ______S___O___. 5 are common words, such as CONQUISTADORES and CONVERSATIONAL. A rarer one is POSTPOSITIONAL. In this set, I is the most frequent open letter (15 words). 2 words contain a doubled letter.

Full list 18

conquistadoresconversationalmetempsychosesmetempsychosisphantasmagoriacongresspeopledispensationaldisquisitionalmetempsychoticmucoviscidosisphantasmagoricbusinesspeoplecompensationalcondensationalconversazioneslymphosarcomasnonsensationalpostpositional

About this list

Words
18 (5 common words)
Common example
conquistadores
Rare example
postpositional
Doubled letters
2
Ending in S
6
Most frequent letter
I (15)

Questions

How many 14-letter words matching ______s___o___ are there?

18. 5 of them are common words.

What is a common example?

CONQUISTADORES is among the common words in this set.