15-Letter Words Matching __F_______I____

There are 12 15-letter words that match __F_______I____. 3 are common words, such as INFALLIBILITIES and INFLEXIBILITIES. A rarer one is REFUNDABILITIES. In this set, I is the most frequent open letter (12 words). 3 words contain a doubled letter.

Full list 12

infallibilitiesinflexibilitiesunfamiliaritiesinfundibuliformaffectabilitiesaffordabilitiesanfractuositiesdefeasibilitiesdefensibilitiesinfeasibilitiesreformabilitiesrefundabilities

About this list

Words
12 (3 common words)
Common example
infallibilities
Rare example
refundabilities
Doubled letters
3
Ending in S
11
Most frequent letter
I (12)

Questions

How many 15-letter words matching __f_______i____ are there?

12. 3 of them are common words.

What is a common example?

INFALLIBILITIES is among the common words in this set.