15-Letter Words Matching ____R_U________

There are 17 15-letter words that match ____R_U________. 1 are common words, such as SUPERNUMERARIES and IMPORTUNATENESS. A rarer one is UNDERPUBLICIZED. In this set, E is the most frequent open letter (16 words). 4 words contain a doubled letter.

Full list 17

supernumerariesimportunatenessopportunenessesdecarburizationhyperfunctionalhypermutabilityincorruptnessesinterculturallyinternucleotideintersubjectivesuperbureaucratsuperhumanitiessupernutritionssupersubtletiesuncircumcisionsundernutritionsunderpublicized

About this list

Words
17 (1 common words)
Common example
supernumeraries
Rare example
underpublicized
Doubled letters
4
Ending in S
9
Most frequent letter
E (16)

Questions

How many 15-letter words matching ____r_u________ are there?

17. 1 of them are common words.

What is a common example?

SUPERNUMERARIES is among the common words in this set.