13-Letter Words Matching ____R_______M

There are 13 13-letter words that match ____R_______M. 1 are common words, such as VENTRILOQUISM and CONTRARIANISM. A rarer one is SUPERORGANISM. In this set, I is the most frequent open letter (13 words). 2 words contain a doubled letter.

Full list 13

ventriloquismcontrarianismdescriptivismdoctrinairismsacerdotalismantiritualismautoradiogrambipartisanismepigrammatismhyperurbanisminterferogramprogressivismsuperorganism

About this list

Words
13 (1 common words)
Common example
ventriloquism
Rare example
superorganism
Doubled letters
2
Ending in S
0
Most frequent letter
I (13)

Questions

How many 13-letter words matching ____r_______m are there?

13. 1 of them are common words.

What is a common example?

VENTRILOQUISM is among the common words in this set.