11-Letter Words Matching ________OO_

There are 25 11-letter words that match ________OO_. 3 are common words, such as BROTHERHOOD and BULLETPROOF. A rarer one is WIDOWERHOOD. In this set, E is the most frequent open letter (23 words). 25 words contain a doubled letter.

Full list 25

Common words

brotherhoodbulletproofhullabaloosafterschoolcreaseproofcrinklerootdidgeridoosgreaseproofleatherwoodshowerproofsubnotebookswitcheroos
brotherhoodbulletproofhullabaloosafterschoolcreaseproofcrinklerootdidgeridoosgreaseproofleatherwoodshowerproofsubnotebookswitcheroosvinegarroonbumbershootdidjeridoosinterschoolpilferproofprophethoodscattergoodservanthoodshittimwoodsuperschooltamperprooftoddlerhoodwidowerhood

About this list

Words
25 (3 common words)
Common example
brotherhood
Rare example
widowerhood
Doubled letters
25
Ending in S
4
Most frequent letter
E (23)

Questions

How many 11-letter words matching ________oo_ are there?

25. 3 of them are common words.

What is a common example?

BROTHERHOOD is among the common words in this set.