13-Letter Words Matching ____R__H_____

There are 21 13-letter words that match ____R__H_____. 4 are common words, such as RAPPROCHEMENT and UNDERACHIEVED. A rarer one is SUPERATHLETES. 4 words contain a doubled letter.

Full list 21

rapprochementunderachievedunderachieverunderachievescopyrightableheterothalliclogarithmicaloverrighteoussuperachievertetartohedralailurophobiasbutyrophenonedownrightnessflourishinglyfluorochromesheterophoniesimperishablesinterbehaviorquadraphonicsquadriphonicssuperathletes

About this list

Words
21 (4 common words)
Common example
rapprochement
Rare example
superathletes
Doubled letters
4
Ending in S
10

Questions

How many 13-letter words matching ____r__h_____ are there?

21. 4 of them are common words.

What is a common example?

RAPPROCHEMENT is among the common words in this set.