15-Letter Words Matching _O_________O___

There are 14 15-letter words that match _O_________O___. 3 are common words, such as CONFRONTATIONAL and NONOCCUPATIONAL. A rarer one is NONINFLECTIONAL. 5 words contain a doubled letter.

Full list 14

confrontationalnonoccupationalnonprofessionalcommunicationalconfigurationalcorticosteroidscorticosteronescounterproposalnoncommissionednonconventionalboustrophedoniccounterresponsedocumentationalnoninflectional

About this list

Words
14 (3 common words)
Common example
confrontational
Rare example
noninflectional
Doubled letters
5
Ending in S
2

Questions

How many 15-letter words matching _o_________o___ are there?

14. 3 of them are common words.

What is a common example?

CONFRONTATIONAL is among the common words in this set.