13-Letter Words Matching __FF_________

There are 14 13-letter words that match __FF_________. 6 are common words, such as DIFFERENTIALS and DIFFERENTIATE. A rarer one is WAFFLESTOMPER. In this set, S is the most frequent open letter (13 words). 14 words contain a doubled letter.

Full list 14

differentialsdifferentiatediffusenesseskaffeeklatschraffishnessessufficienciesdifferentnesssuffocatinglybuffalofishesdiffusionismsdiffusionistsdiffusivenessdiffusivitieswafflestomper

About this list

Words
14 (6 common words)
Common example
differentials
Rare example
wafflestomper
Doubled letters
14
Ending in S
10
Most frequent letter
S (13)

Questions

How many 13-letter words matching __ff_________ are there?

14. 6 of them are common words.

What is a common example?

DIFFERENTIALS is among the common words in this set.