12-Letter Words Matching _C_____O____

There are 19 12-letter words that match _C_____O____. 8 are common words, such as ACCORDIONIST and OCEANOLOGIES. A rarer one is SCHOOLBOYISH. In this set, S is the most frequent open letter (17 words). 10 words contain a doubled letter.

Full list 19

accordionistoceanologiesscandalouslyschoolhousesschussboomerscrupulosityscrupulouslyscurrilouslyaccessioningaccretionaryaccusatorialecclesiologyschizogoniessclerotomiesactinomorphyechinococcusoceanologistschizogonousschoolboyish

About this list

Words
19 (8 common words)
Common example
accordionist
Rare example
schoolboyish
Doubled letters
10
Ending in S
6
Most frequent letter
S (17)

Questions

How many 12-letter words matching _c_____o____ are there?

19. 8 of them are common words.

What is a common example?

ACCORDIONIST is among the common words in this set.