15-Letter Words Matching ____C_O________

There are 28 15-letter words that match ____C_O________. 16 are common words, such as ATROCIOUSNESSES and AUDACIOUSNESSES. A rarer one is VERACIOUSNESSES. In this set, I is the most frequent open letter (28 words). 20 words contain a doubled letter.

Full list 28

Common words

atrociousnessesaudaciousnessescapaciousnessesconsciousnessesdeliciousnessesferociousnessesinnocuousnessesjudiciousnessesludicrousnessesmaliciousnessesofficiousnessesrapaciousnesses
atrociousnessesaudaciousnessescapaciousnessesconsciousnessesdeliciousnessesferociousnessesinnocuousnessesjudiciousnessesludicrousnessesmaliciousnessesofficiousnessesrapaciousnessessalaciousnessestenaciousnessesvivaciousnessesvoraciousnessesanticholesterolanticholinergicdolichocephalicfugaciousnesseshypochondriacalhypochondriaseshypochondriasissynecdochicallybronchodilatorsbronchoscopistssagaciousnessesveraciousnesses

About this list

Words
28 (16 common words)
Common example
atrociousnesses
Rare example
veraciousnesses
Doubled letters
20
Ending in S
23
Most frequent letter
I (28)

Questions

How many 15-letter words matching ____c_o________ are there?

28. 16 of them are common words.

What is a common example?

ATROCIOUSNESSES is among the common words in this set.