13-Letter Words Matching _F_E_________

There are 13 13-letter words that match _F_E_________. 4 are common words, such as AFTERTHOUGHTS and EFFECTIVENESS. A rarer one is AFFECTIVITIES. In this set, F is the most frequent open letter (12 words). 12 words contain a doubled letter.

Full list 13

afterthoughtseffectivenesseffervescenceoffensivenessaffectivenessaffenpinschereffectivitieseffectualnesseffectuationsaffectabilityaffectionallyaffectionlessaffectivities

About this list

Words
13 (4 common words)
Common example
afterthoughts
Rare example
affectivities
Doubled letters
12
Ending in S
9
Most frequent letter
F (12)

Questions

How many 13-letter words matching _f_e_________ are there?

13. 4 of them are common words.

What is a common example?

AFTERTHOUGHTS is among the common words in this set.