12-Letter Words Matching __E____F____

There are 14 12-letter words that match __E____F____. 5 are common words, such as CHESTERFIELD and ELECTRIFIERS. A rarer one is PRENOTIFYING. In this set, I is the most frequent open letter (12 words). 5 words contain a doubled letter.

Full list 14

chesterfieldelectrifierselectrifyingexemplifyinguneventfullyoverstuffingspeechifyingelectroformsfrenchifyingoverfulfillsoverstaffingpreachifyingpremodifyingprenotifying

About this list

Words
14 (5 common words)
Common example
chesterfield
Rare example
prenotifying
Doubled letters
5
Ending in S
3
Most frequent letter
I (12)

Questions

How many 12-letter words matching __e____f____ are there?

14. 5 of them are common words.

What is a common example?

CHESTERFIELD is among the common words in this set.