13-Letter Words Matching F____L_______

There are 22 13-letter words that match F____L_______. 11 are common words, such as FAITHLESSNESS and FAULTLESSNESS. A rarer one is FORMULARIZERS. In this set, I is the most frequent open letter (19 words). 15 words contain a doubled letter.

Full list 22

faithlessnessfaultlessnessfertilizationfibrillationsflagellationsfloodlightingformaldehydesformalizationfossilizationfrivolousnessfruitlessnessfeudalizationformulaicallyformularizingfossiliferousfencelessnessfertilenessesfeuilletonismfeuilletonistflagellantismflugelhornistformularizers

About this list

Words
22 (11 common words)
Common example
faithlessness
Rare example
formularizers
Doubled letters
15
Ending in S
11
Most frequent letter
I (19)

Questions

How many 13-letter words matching f____l_______ are there?

22. 11 of them are common words.

What is a common example?

FAITHLESSNESS is among the common words in this set.