12-Letter Words Matching ______N__R__

There are 21 12-letter words that match ______N__R__. 9 are common words, such as BILLIONAIRES and BOUTONNIERES. A rarer one is ZILLIONAIRES. In this set, E is the most frequent open letter (21 words). 8 words contain a doubled letter.

Full list 21

billionairesboutonnierescaravanseraidoctrinairesearthenwareskitchenwareslegionnairesmillionairesoverwinteredunendangeredarmamentariafellmongeredoverconcernsovermanneredreengineeredrelicensuresrencounteredtrochanteraltrochantericunderinsuredzillionaires

About this list

Words
21 (9 common words)
Common example
billionaires
Rare example
zillionaires
Doubled letters
8
Ending in S
10
Most frequent letter
E (21)

Questions

How many 12-letter words matching ______n__r__ are there?

21. 9 of them are common words.

What is a common example?

BILLIONAIRES is among the common words in this set.