11-Letter Words Matching ____FF_____

There are 13 11-letter words that match ____FF_____. 5 are common words, such as CHAUFFEURED and DISAFFECTED. A rarer one is UNCOFFINING. In this set, I is the most frequent open letter (11 words). 13 words contain a doubled letter.

Full list 13

chauffeureddisaffectedindifferentnonofficialscruffinessdisafforestdisaffirmedinsufflatedinsufflatesinsufflatornonaffluentparaffininguncoffining

About this list

Words
13 (5 common words)
Common example
chauffeured
Rare example
uncoffining
Doubled letters
13
Ending in S
2
Most frequent letter
I (11)

Questions

How many 11-letter words matching ____ff_____ are there?

13. 5 of them are common words.

What is a common example?

CHAUFFEURED is among the common words in this set.