12-Letter Words Matching _IF_________

There are 17 12-letter words that match _IF_________. 5 are common words, such as BIFURCATIONS and DIFFERENTIAL. A rarer one is WIFELINESSES. In this set, N is the most frequent open letter (15 words). 12 words contain a doubled letter.

Full list 17

bifurcationsdifferentialdifficultiesdiffractionslifelessnessbiflagellatedifferencingdifferentiaebifunctionaldiffusionismdiffusionistdifunctionalgiftednesseslifeguardinglifelikenesslifemanshipswifelinesses

About this list

Words
17 (5 common words)
Common example
bifurcations
Rare example
wifelinesses
Doubled letters
12
Ending in S
8
Most frequent letter
N (15)

Questions

How many 12-letter words matching _if_________ are there?

17. 5 of them are common words.

What is a common example?

BIFURCATIONS is among the common words in this set.