13-Letter Words Containing EFI

There are 18 13-letter words that contain EFI. 6 are common words, such as BENEFICIARIES and FIREFIGHTINGS. A rarer one is ULTRARAREFIED. 5 words contain a doubled letter.

Full list 18

beneficiariesfirefightingsnonrefillableprizefightersprizefightingredefinitionsdefibrillatorprefigurationprefigurativeprefigurementbeneficiatingbeneficiationcycloolefinicdefibrillateddefibrillatesdefibrinatingdefibrinationultrararefied

About this list

Words
18 (6 common words)
Common example
beneficiaries
Rare example
ultrararefied
Doubled letters
5
Ending in S
5

Questions

How many 13-letter words containing efi are there?

18. 6 of them are common words.

What is a common example?

BENEFICIARIES is among the common words in this set.