12-Letter Words Matching ________OU__

There are 12 12-letter words that match ________OU__. 5 are common words, such as BATTLEGROUND and BLABBERMOUTH. A rarer one is WHERETHROUGH. In this set, E is the most frequent open letter (12 words). 5 words contain a doubled letter.

Full list 12

battlegroundblabbermouthbreakthroughmeetinghousepackinghouseflittermousebreechcloutscountercoupscustomshouseinterboroughoverdiscountwherethrough

About this list

Words
12 (5 common words)
Common example
battleground
Rare example
wherethrough
Doubled letters
5
Ending in S
2
Most frequent letter
E (12)

Questions

How many 12-letter words matching ________ou__ are there?

12. 5 of them are common words.

What is a common example?

BATTLEGROUND is among the common words in this set.