12-Letter Words Matching _E_F________

There are 14 12-letter words that match _E_F________. 5 are common words, such as DEIFICATIONS and PERFIDIOUSLY. A rarer one is SELFSAMENESS. 3 words contain a doubled letter.

Full list 14

deificationsperfidiouslyperforationsperformancesselflessnessnewfashionedperformativeperfusionistreificationsperfectivelyperfectivityperformatoryreafforestedselfsameness

About this list

Words
14 (5 common words)
Common example
deifications
Rare example
selfsameness
Doubled letters
3
Ending in S
6

Questions

How many 12-letter words matching _e_f________ are there?

14. 5 of them are common words.

What is a common example?

DEIFICATIONS is among the common words in this set.