15-Letter Words Matching ____F__________

There are 36 15-letter words that match ____F__________. 5 are common words, such as ARTIFICIALITIES and DISAFFILIATIONS. A rarer one is VERIFIABILITIES. In this set, E is the most frequent open letter (35 words). 20 words contain a doubled letter.

Full list 36

Common words

artificialitiesdisaffiliationsineffectivenessinoffensivenessinsufficienciesdinoflagellatesindefensibilityineffectualnessoverfamiliarityreafforestationuninformativelyantifashionable
artificialitiesdisaffiliationsineffectivenessinoffensivenessinsufficienciesdinoflagellatesindefensibilityineffectualnessoverfamiliarityreafforestationuninformativelyantifashionableantifederalistsantiferromagnetantifilibustersantiforeclosurebarefacednessescodifiabilitiesdecaffeinationsdedifferentiategyrofrequencieshemoflagellatesindefeasibilityindefectibilityindefinablenessindifferentismsindifferentistsineffablenessesineffaceabilityinefficaciouslyirreformabilityirrefragabilitymetafictionistsmodifiabilitiesoverfertilizingverifiabilities

About this list

Words
36 (5 common words)
Common example
artificialities
Rare example
verifiabilities
Doubled letters
20
Ending in S
21
Most frequent letter
E (35)

Questions

How many 15-letter words matching ____f__________ are there?

36. 5 of them are common words.

What is a common example?

ARTIFICIALITIES is among the common words in this set.