12-Letter Words Matching ____F____N__

There are 15 12-letter words that match ____F____N__. 5 are common words, such as COEFFICIENTS and INDIFFERENCE. A rarer one is WILDFOWLINGS. In this set, I is the most frequent open letter (14 words). 7 words contain a doubled letter.

Full list 15

coefficientsindifferenceinefficiencyscaffoldingstraffickingsacriflavinesbonefishingscodefendantshandfastingsindifferencyinefficientsmanifestantspathfindingsrubefacientswildfowlings

About this list

Words
15 (5 common words)
Common example
coefficients
Rare example
wildfowlings
Doubled letters
7
Ending in S
12
Most frequent letter
I (14)

Questions

How many 12-letter words matching ____f____n__ are there?

15. 5 of them are common words.

What is a common example?

COEFFICIENTS is among the common words in this set.