11-Letter Words Matching _____F_N___

There are 12 11-letter words that match _____F_N___. 3 are common words, such as CROWDFUNDED and FAULTFINDER. A rarer one is UNCOFFINING. In this set, I is the most frequent open letter (10 words). 3 words contain a doubled letter.

Full list 12

crowdfundedfaultfinderscruffinesstransfiniteunderfundedpredefiningrangefinderbedeafeningmicrofungusmisdefiningparaffininguncoffining

About this list

Words
12 (3 common words)
Common example
crowdfunded
Rare example
uncoffining
Doubled letters
3
Ending in S
2
Most frequent letter
I (10)

Questions

How many 11-letter words matching _____f_n___ are there?

12. 3 of them are common words.

What is a common example?

CROWDFUNDED is among the common words in this set.