13-Letter Words Containing EFA

There are 12 13-letter words that contain EFA. 8 are common words, such as INDEFATIGABLE and INDEFATIGABLY. A rarer one is TELEFACSIMILE. In this set, I is the most frequent open letter (11 words). 2 words contain a doubled letter.

Full list 12

indefatigableindefatigablyliquefactionsnefariousnessprefabricatedprefabricatesputrefactionsstupefactionsbarefacednesscalefactoriesrarefactionaltelefacsimile

About this list

Words
12 (8 common words)
Common example
indefatigable
Rare example
telefacsimile
Doubled letters
2
Ending in S
7
Most frequent letter
I (11)

Questions

How many 13-letter words containing efa are there?

12. 8 of them are common words.

What is a common example?

INDEFATIGABLE is among the common words in this set.