12-Letter Words Matching _________N_R

There are 12 12-letter words that match _________N_R. 6 are common words, such as COMMISSIONER and CONFECTIONER. A rarer one is NONLANDOWNER. In this set, E is the most frequent open letter (12 words). 2 words contain a doubled letter.

Full list 12

commissionerconfectionercountertenorpractitionerstraightenerstrengthenerconcessionerconventionerexhibitionerredemptionerinterlaminarnonlandowner

About this list

Words
12 (6 common words)
Common example
commissioner
Rare example
nonlandowner
Doubled letters
2
Ending in S
0
Most frequent letter
E (12)

Questions

How many 12-letter words matching _________n_r are there?

12. 6 of them are common words.

What is a common example?

COMMISSIONER is among the common words in this set.