10-Letter Words Matching _____RF___

There are 23 10-letter words that match _____RF___. 9 are common words, such as BUTTERFATS and CENTERFOLD. A rarer one is LETTERFORM. In this set, E is the most frequent open letter (20 words). 8 words contain a doubled letter.

Full list 23

butterfatscenterfoldoutperformpluperfectsilverfishsubsurfacesubterfugetenderfeettenderfootarcherfishbutterfishdollarfishguitarfishsalverformsuckerfishwinterfeedanglerfishbedwarfingdipperfulsdrawerfulsfisherfolkharborfulsletterform

About this list

Words
23 (9 common words)
Common example
butterfats
Rare example
letterform
Doubled letters
8
Ending in S
4
Most frequent letter
E (20)

Questions

How many 10-letter words matching _____rf___ are there?

23. 9 of them are common words.

What is a common example?

BUTTERFATS is among the common words in this set.