13-Letter Words Matching ___F_____I___

There are 21 13-letter words that match ___F_____I___. 9 are common words, such as CONFIRMATIONS and CONFISCATIONS. A rarer one is TRIFURCATIONS. In this set, S is the most frequent open letter (20 words). 8 words contain a doubled letter.

Full list 21

confirmationsconfiscationsconformationsdifferentialsdifferentiatedisfranchiseddisfranchisesmalformationsprofiteeringsinefficaciousprofessoriatesurfboardingsconferencingsdiffusionismsdiffusionistsperformativesperfusionistspreformationsprofessoriatssulfadiazinestrifurcations

About this list

Words
21 (9 common words)
Common example
confirmations
Rare example
trifurcations
Doubled letters
8
Ending in S
18
Most frequent letter
S (20)

Questions

How many 13-letter words matching ___f_____i___ are there?

21. 9 of them are common words.

What is a common example?

CONFIRMATIONS is among the common words in this set.