13-Letter Words Matching _N__F________

There are 22 13-letter words that match _N__F________. 10 are common words, such as INDEFATIGABLE and INDEFATIGABLY. A rarer one is INEFFABLENESS. In this set, I is the most frequent open letter (21 words). 11 words contain a doubled letter.

Full list 22

indefatigableindefatigablyindifferencesindifferentlyineffectivelyineffectuallyinefficientlyinoffensivelyinsufficiencyuninformativeunenforceableantifeminismsantifeministsantifertilityinefficaciousinsufflationsuninfluentialunoffensivelyantiforeignerantiformalistantifrictionsineffableness

About this list

Words
22 (10 common words)
Common example
indefatigable
Rare example
ineffableness
Doubled letters
11
Ending in S
7
Most frequent letter
I (21)

Questions

How many 13-letter words matching _n__f________ are there?

22. 10 of them are common words.

What is a common example?

INDEFATIGABLE is among the common words in this set.