15-Letter Words Matching _R____S________

There are 20 15-letter words that match _R____S________. 10 are common words, such as PROCRASTINATING and PROCRASTINATION. A rarer one is TRANSISTORISING. In this set, I is the most frequent open letter (20 words). 6 words contain a doubled letter.

Full list 20

procrastinatingprocrastinationprocrastinatorsprofessionalismprofessionalizeprognosticatingprognosticationprognosticatorsprogressivenesstransistorizingirresistibilityorthopsychiatryproconservationprocrastinatoryprognosticatoryprogressivitiesprepresidentialprognosticativeprogressivistictransistorising

About this list

Words
20 (10 common words)
Common example
procrastinating
Rare example
transistorising
Doubled letters
6
Ending in S
4
Most frequent letter
I (20)

Questions

How many 15-letter words matching _r____s________ are there?

20. 10 of them are common words.

What is a common example?

PROCRASTINATING is among the common words in this set.