15-Letter Words Matching I___F__________

There are 15 15-letter words that match I___F__________. 3 are common words, such as INEFFECTIVENESS and INOFFENSIVENESS. A rarer one is IRREFRAGABILITY. In this set, E is the most frequent open letter (15 words). 12 words contain a doubled letter.

Full list 15

ineffectivenessinoffensivenessinsufficienciesindefensibilityineffectualnessindefeasibilityindefectibilityindefinablenessindifferentismsindifferentistsineffablenessesineffaceabilityinefficaciouslyirreformabilityirrefragability

About this list

Words
15 (3 common words)
Common example
ineffectiveness
Rare example
irrefragability
Doubled letters
12
Ending in S
8
Most frequent letter
E (15)

Questions

How many 15-letter words matching i___f__________ are there?

15. 3 of them are common words.

What is a common example?

INEFFECTIVENESS is among the common words in this set.