15-Letter Words Matching ____R_R________

There are 13 15-letter words that match ____R_R________. 5 are common words, such as HYPERCRITICALLY and INTERPRETATIONS. A rarer one is TEMERARIOUSNESS. 2 words contain a doubled letter.

Full list 13

hypercriticallyinterpretationssupererogationsunderprivilegedunderproductionchlorpromazineschlorpropamideshypercriticismshyperproductioninterfraternityintergradationsinterprovincialtemerariousness

About this list

Words
13 (5 common words)
Common example
hypercritically
Rare example
temerariousness
Doubled letters
2
Ending in S
7

Questions

How many 15-letter words matching ____r_r________ are there?

13. 5 of them are common words.

What is a common example?

HYPERCRITICALLY is among the common words in this set.