13-Letter Words Matching I___F________

There are 13 13-letter words that match I___F________. 9 are common words, such as INDEFATIGABLE and INDEFATIGABLY. A rarer one is INEFFABLENESS. In this set, N is the most frequent open letter (13 words). 11 words contain a doubled letter.

Full list 13

indefatigableindefatigablyindifferencesindifferentlyineffectivelyineffectuallyinefficientlyinoffensivelyinsufficiencyinefficaciousinsufflationsirrefrangibleineffableness

About this list

Words
13 (9 common words)
Common example
indefatigable
Rare example
ineffableness
Doubled letters
11
Ending in S
4
Most frequent letter
N (13)

Questions

How many 13-letter words matching i___f________ are there?

13. 9 of them are common words.

What is a common example?

INDEFATIGABLE is among the common words in this set.