12-Letter Words Containing EFR

There are 18 12-letter words that contain EFR. 8 are common words, such as BATTLEFRONTS and REFRACTORIES. A rarer one is REFRESHENING. In this set, I is the most frequent open letter (16 words). 3 words contain a doubled letter.

Full list 18

battlefrontsrefractoriesrefreshinglyrefreshmentsrefrigerantsrefrigeratedrefrigeratesrefrigeratorbirefringentdefraudationirrefragableirrefragablyrefractionalrefractivelyrefractivityrefractorilyrefrainmentsrefreshening

About this list

Words
18 (8 common words)
Common example
battlefronts
Rare example
refreshening
Doubled letters
3
Ending in S
6
Most frequent letter
I (16)

Questions

How many 12-letter words containing efr are there?

18. 8 of them are common words.

What is a common example?

BATTLEFRONTS is among the common words in this set.