9-Letter Words Matching _____RR__

There are 20 9-letter words that match _____RR__. 10 are common words, such as BESTIRRED and CHAPARRAL. A rarer one is UPSTIRRED. In this set, E is the most frequent open letter (17 words). 20 words contain a doubled letter.

Full list 20

bestirredchaparralconcurredconferralconferredconferrercostarreddisbarredparterrespreferredbandurriaschnorrersubtorridunscarredunstirredinstarredoutwarredpreferrershikarredupstirred

About this list

Words
20 (10 common words)
Common example
bestirred
Rare example
upstirred
Doubled letters
20
Ending in S
1
Most frequent letter
E (17)

Questions

How many 9-letter words matching _____rr__ are there?

20. 10 of them are common words.

What is a common example?

BESTIRRED is among the common words in this set.