15-Letter Words Matching _____O__O______

There are 30 15-letter words that match _____O__O______. 7 are common words, such as ACRIMONIOUSNESS and CEREMONIOUSNESS. A rarer one is UNMELODIOUSNESS. In this set, I is the most frequent open letter (28 words). 10 words contain a doubled letter.

Full list 30

Common words

acrimoniousnessceremoniousnessmeritoriousnesspostconsonantalreincorporatingreincorporationunaccommodatingancylostomiasisankylostomiasisimmunoglobulinsmorphophonemicsorganophosphate
acrimoniousnessceremoniousnessmeritoriousnesspostconsonantalreincorporatingreincorporationunaccommodatingancylostomiasisankylostomiasisimmunoglobulinsmorphophonemicsorganophosphatepsychobiologiststereoisomerismancylostomiasesankylostomiasesantipornographychronobiologieschronobiologistcryptozoologiescryptozoologistepizootiologiesimmunoblottingsmegacorporationpseudoscorpionspsychoacousticspsychobiographypsychobiologiessemipornographyunmelodiousness

About this list

Words
30 (7 common words)
Common example
acrimoniousness
Rare example
unmelodiousness
Doubled letters
10
Ending in S
17
Most frequent letter
I (28)

Questions

How many 15-letter words matching _____o__o______ are there?

30. 7 of them are common words.

What is a common example?

ACRIMONIOUSNESS is among the common words in this set.