12-Letter Words Matching ____FF______

There are 16 12-letter words that match ____FF______. 10 are common words, such as CHAUFFEURING and DECAFFEINATE. A rarer one is INSUFFLATORS. In this set, I is the most frequent open letter (16 words). 16 words contain a doubled letter.

Full list 16

chauffeuringdecaffeinatedisaffectingdisaffectiondisaffiliateindifferenceinsufferableinsufferablyinsufficientnoneffectivedisafforestsinsufflationdisaffirmingindifferencyinsufflatinginsufflators

About this list

Words
16 (10 common words)
Common example
chauffeuring
Rare example
insufflators
Doubled letters
16
Ending in S
2
Most frequent letter
I (16)

Questions

How many 12-letter words matching ____ff______ are there?

16. 10 of them are common words.

What is a common example?

CHAUFFEURING is among the common words in this set.