15-Letter Words Matching R____________S_

There are 14 15-letter words that match R____________S_. 4 are common words, such as REMORSELESSNESS and REPETITIOUSNESS. A rarer one is RUDIMENTARINESS. 13 words contain a doubled letter.

Full list 14

remorselessnessrepetitiousnessresourcefulnessrestrictivenessreproachfulnessresponsiblenessresurrectionismresurrectionistrumbustiousnessrefrangiblenessrespectablenessroentgenologistroundheadednessrudimentariness

About this list

Words
14 (4 common words)
Common example
remorselessness
Rare example
rudimentariness
Doubled letters
13
Ending in S
11

Questions

How many 15-letter words matching r____________s_ are there?

14. 4 of them are common words.

What is a common example?

REMORSELESSNESS is among the common words in this set.