13-Letter Words Matching _____F___N___

There are 18 13-letter words that match _____F___N___. 12 are common words, such as COLORFASTNESS and IMPERFECTNESS. A rarer one is UNDERFINANCED. In this set, E is the most frequent open letter (17 words). 8 words contain a doubled letter.

Full list 18

colorfastnessimperfectnessindifferencesindifferentlyinterferencesmagnificencesmagnificentlysignificancessignificantlysteadfastnesstransferencesunselfishnesslightfastnessmellifluentlymisreferencesnoninfluencesultrafeminineunderfinanced

About this list

Words
18 (12 common words)
Common example
colorfastness
Rare example
underfinanced
Doubled letters
8
Ending in S
12
Most frequent letter
E (17)

Questions

How many 13-letter words matching _____f___n___ are there?

18. 12 of them are common words.

What is a common example?

COLORFASTNESS is among the common words in this set.