12-Letter Words Matching _E______F___

There are 17 12-letter words that match _E______F___. 10 are common words, such as DECLASSIFIED and DECLASSIFIES. A rarer one is RESOLIDIFIES. In this set, I is the most frequent open letter (16 words). 6 words contain a doubled letter.

Full list 17

declassifieddeclassifiesdehumidifieddehumidifierdehumidifiesheatproofingreclassifiedreclassifiesteaspoonfulsweightlifterhereinbeforeserpentiformrecentrifugereidentifiedreidentifiesresolidifiedresolidifies

About this list

Words
17 (10 common words)
Common example
declassified
Rare example
resolidifies
Doubled letters
6
Ending in S
6
Most frequent letter
I (16)

Questions

How many 12-letter words matching _e______f___ are there?

17. 10 of them are common words.

What is a common example?

DECLASSIFIED is among the common words in this set.