13-Letter Words Matching _________R_S_

There are 26 13-letter words that match _________R_S_. 5 are common words, such as ACUPUNCTURIST and AGRICULTURIST. A rarer one is TRANSISTORISE. In this set, I is the most frequent open letter (25 words). 5 words contain a doubled letter.

Full list 26

Common words

acupuncturistagriculturistethnocentrismtoastmistressviticulturistantiterrorismantiterroristaquaculturistchiaroscuristdoctrinairismdocumentaristhousemistress
acupuncturistagriculturistethnocentrismtoastmistressviticulturistantiterrorismantiterroristaquaculturistchiaroscuristdoctrinairismdocumentaristhousemistresslepidopteristmariculturistmillionairessparticularismpsychometristsericulturistvernacularismviniculturistwatercoloristcounterthrustnonmonetaristparticulariseparticularisttransistorise

About this list

Words
26 (5 common words)
Common example
acupuncturist
Rare example
transistorise
Doubled letters
5
Ending in S
3
Most frequent letter
I (25)

Questions

How many 13-letter words matching _________r_s_ are there?

26. 5 of them are common words.

What is a common example?

ACUPUNCTURIST is among the common words in this set.