14-Letter Words Matching ___F_________Y

There are 13 14-letter words that match ___F_________Y. 5 are common words, such as CONFIDENTIALLY and PERFECTIBILITY. A rarer one is TRAFFICABILITY. In this set, I is the most frequent open letter (13 words). 9 words contain a doubled letter.

Full list 13

confidentiallyperfectibilitypreferentiallyprofessionallyprofessoriallyconformabilitydifferentiallyineffectualityconfessionallyconfirmabilitydiffractometryperformabilitytrafficability

About this list

Words
13 (5 common words)
Common example
confidentially
Rare example
trafficability
Doubled letters
9
Ending in S
0
Most frequent letter
I (13)

Questions

How many 14-letter words matching ___f_________y are there?

13. 5 of them are common words.

What is a common example?

CONFIDENTIALLY is among the common words in this set.