13-Letter Words Matching _________R__N

There are 16 13-letter words that match _________R__N. 4 are common words, such as AUTHORITARIAN and COUNCILPERSON. A rarer one is SEMIEVERGREEN. In this set, I is the most frequent open letter (15 words). 3 words contain a doubled letter.

Full list 16

authoritariancouncilpersonvaledictorianweatherpersoncommunitariandocumentarianmitochondrionphalansteriansuburbicarianterpsichoreancochairpersoninegalitariannecessitariannonvegetarianpostlapsariansemievergreen

About this list

Words
16 (4 common words)
Common example
authoritarian
Rare example
semievergreen
Doubled letters
3
Ending in S
0
Most frequent letter
I (15)

Questions

How many 13-letter words matching _________r__n are there?

16. 4 of them are common words.

What is a common example?

AUTHORITARIAN is among the common words in this set.