15-Letter Words Matching ____R____M_____

There are 12 15-letter words that match ____R____M_____. 3 are common words, such as QUARRELSOMENESS and UNDERESTIMATING. A rarer one is NEPHRECTOMIZING. In this set, E is the most frequent open letter (12 words). 4 words contain a doubled letter.

Full list 12

quarrelsomenessunderestimatingunderestimationcentrosymmetricinterferometersinterferometricsclerodermatousdiffractometersdiffractometricgewurztraminersintervalometersnephrectomizing

About this list

Words
12 (3 common words)
Common example
quarrelsomeness
Rare example
nephrectomizing
Doubled letters
4
Ending in S
6
Most frequent letter
E (12)

Questions

How many 15-letter words matching ____r____m_____ are there?

12. 3 of them are common words.

What is a common example?

QUARRELSOMENESS is among the common words in this set.