12-Letter Words Containing OOF

There are 21 12-letter words that contain OOF. 14 are common words, such as BOMBPROOFING and BULLETPROOFS. A rarer one is WATERPROOFER. In this set, R is the most frequent open letter (21 words). 21 words contain a doubled letter.

Full list 21

bombproofingbulletproofsburglarproofchildproofedfireproofingflameproofedheatproofingproofreadersproofreadingrustproofingshatterproofsoundproofedwaterproofedweatherproofcounterproofcuckooflowermothproofingflameproofergreaseproofsmothprooferswaterproofer

About this list

Words
21 (14 common words)
Common example
bombproofing
Rare example
waterproofer
Doubled letters
21
Ending in S
4
Most frequent letter
R (21)

Questions

How many 12-letter words containing oof are there?

21. 14 of them are common words.

What is a common example?

BOMBPROOFING is among the common words in this set.