14-Letter Words Matching _R_U__________

There are 13 14-letter words that match _R_U__________. 4 are common words, such as ARGUMENTATIONS and GROUNDBREAKING. A rarer one is TROUBLEMAKINGS. In this set, E is the most frequent open letter (12 words). 6 words contain a doubled letter.

Full list 13

argumentationsgroundbreakingtroubleshootedtroubleshooterbraunschweigergroundskeepersdroughtinessesfraudulentnessgroundbreakersgroundlessnesspreunificationtraumatizationtroublemakings

About this list

Words
13 (4 common words)
Common example
argumentations
Rare example
troublemakings
Doubled letters
6
Ending in S
7
Most frequent letter
E (12)

Questions

How many 14-letter words matching _r_u__________ are there?

13. 4 of them are common words.

What is a common example?

ARGUMENTATIONS is among the common words in this set.