13-Letter Words Matching __R__D_______

There are 14 13-letter words that match __R__D_______. 5 are common words, such as JURISDICTIONS and PERIODICITIES. A rarer one is UNREADINESSES. In this set, I is the most frequent open letter (14 words). 3 words contain a doubled letter.

Full list 14

jurisdictionsperiodicitiesperiodontistsserendipitiesserendipitousformidabilityperiodizationunreadabilityperiodontallyspreadabilitythreadinessesturbidimetersturbidimetricunreadinesses

About this list

Words
14 (5 common words)
Common example
jurisdictions
Rare example
unreadinesses
Doubled letters
3
Ending in S
8
Most frequent letter
I (14)

Questions

How many 13-letter words matching __r__d_______ are there?

14. 5 of them are common words.

What is a common example?

JURISDICTIONS is among the common words in this set.