15-Letter Words Matching ____NU_________

There are 12 15-letter words that match ____NU_________. 2 are common words, such as INGENUOUSNESSES and STRENUOUSNESSES. A rarer one is RIBONUCLEOTIDES. In this set, E is the most frequent open letter (11 words). 2 words contain a doubled letter.

Full list 12

ingenuousnessesstrenuousnessesagranulocytosesagranulocytosisendonucleolyticmononucleosisesmononucleotidespolynucleotidesremanufacturersremanufacturingribonucleosidesribonucleotides

About this list

Words
12 (2 common words)
Common example
ingenuousnesses
Rare example
ribonucleotides
Doubled letters
2
Ending in S
10
Most frequent letter
E (11)

Questions

How many 15-letter words matching ____nu_________ are there?

12. 2 of them are common words.

What is a common example?

INGENUOUSNESSES is among the common words in this set.