12-Letter Words Matching ________O__R

There are 24 12-letter words that match ________O__R. 6 are common words, such as COMMISSIONER and CONFECTIONER. A rarer one is WATERPROOFER. In this set, E is the most frequent open letter (24 words). 10 words contain a doubled letter.

Full list 24

commissionerconfectionerflamethrowerpractitionerschussboomersharpshooterantitakeoverconcessionerconventionercuckooflowerelectromotorexhibitionerfennelflowerforeshadowerhomeschoolerpasqueflowerredemptionersensorimotorstereoisomercounterpowerdiastereomerflameproofernoncrossoverwaterproofer

About this list

Words
24 (6 common words)
Common example
commissioner
Rare example
waterproofer
Doubled letters
10
Ending in S
0
Most frequent letter
E (24)

Questions

How many 12-letter words matching ________o__r are there?

24. 6 of them are common words.

What is a common example?

COMMISSIONER is among the common words in this set.