13-Letter Words Matching _____RU______

There are 19 13-letter words that match _____RU______. 8 are common words, such as CONSTRUCTIONS and INCORRUPTIBLE. A rarer one is SUBSTRUCTURAL. In this set, T is the most frequent open letter (18 words). 6 words contain a doubled letter.

Full list 19

constructionsincorruptibleincorruptiblyinterruptionsmenstruationsnonstructuralsubstructuresunobtrusivelyconstructableconstructibleincorruptionsantipruriticsdaunorubicinsincorruptnessinterruptiblenonstructuredprestructuredprestructuressubstructural

About this list

Words
19 (8 common words)
Common example
constructions
Rare example
substructural
Doubled letters
6
Ending in S
9
Most frequent letter
T (18)

Questions

How many 13-letter words matching _____ru______ are there?

19. 8 of them are common words.

What is a common example?

CONSTRUCTIONS is among the common words in this set.