10-Letter Words Matching ____R_F___

There are 31 10-letter words that match ____R_F___. 9 are common words, such as CENTRIFUGE and CHLOROFORM. A rarer one is SUDORIFICS. In this set, I is the most frequent open letter (28 words). 2 words contain a doubled letter.

Full list 31

Common words

centrifugechloroformgentrifiedgentrifieshonorificsibuprofensnonprofitssoporificsunverifiedcontraflowcribriformdendriform
centrifugechloroformgentrifiedgentrifieshonorificsibuprofensnonprofitssoporificsunverifiedcontraflowcribriformdendriformesterifiedesterifiesetherifiedetherifiesgentrifieroverrefinequatrefoilunpurifiedantireformcopurifiedcopurifiesisograftedmisgraftedoverruffedrepurifiedrepurifiesreverifiedreverifiessudorifics

About this list

Words
31 (9 common words)
Common example
centrifuge
Rare example
sudorifics
Doubled letters
2
Ending in S
11
Most frequent letter
I (28)

Questions

How many 10-letter words matching ____r_f___ are there?

31. 9 of them are common words.

What is a common example?

CENTRIFUGE is among the common words in this set.