15-Letter Words Matching ____RM_________

There are 17 15-letter words that match ____RM_________. 1 are common words, such as INFORMATIVENESS and DETERMINATENESS. A rarer one is SUPERMAJORITIES. In this set, I is the most frequent open letter (17 words). 4 words contain a doubled letter.

Full list 17

informativenessdeterminatenessdeterminativelyinterminabilityintermittenciesrenormalizationhypermetabolismhypermobilitieshypermodernistshypermutabilityinformationallyintermediationsintermodulationreformabilitiesrumormongeringssabermetricianssupermajorities

About this list

Words
17 (1 common words)
Common example
informativeness
Rare example
supermajorities
Doubled letters
4
Ending in S
10
Most frequent letter
I (17)

Questions

How many 15-letter words matching ____rm_________ are there?

17. 1 of them are common words.

What is a common example?

INFORMATIVENESS is among the common words in this set.