14-Letter Words Matching _____E____O___

There are 18 14-letter words that match _____E____O___. 4 are common words, such as ARCHIEPISCOPAL and CONGREGATIONAL. A rarer one is THUNDERSTROKES. In this set, N is the most frequent open letter (15 words). 7 words contain a doubled letter.

Full list 18

archiepiscopalcongregationalnonoperationalweatherproofedcongresspeoplecounterstrokesdexamethasoneshalfpennyworthbusinesspeoplecountereffortscounterreformsextraembryonichemicelluloseshyperemotionalpreoperationalsedimentologicthiabendazolesthunderstrokes

About this list

Words
18 (4 common words)
Common example
archiepiscopal
Rare example
thunderstrokes
Doubled letters
7
Ending in S
7
Most frequent letter
N (15)

Questions

How many 14-letter words matching _____e____o___ are there?

18. 4 of them are common words.

What is a common example?

ARCHIEPISCOPAL is among the common words in this set.