12-Letter Words Matching _N_F________

There are 15 12-letter words that match _N_F________. 8 are common words, such as INEFFABILITY and INEFFICACIES. A rarer one is SNIFFISHNESS. 12 words contain a doubled letter.

Full list 15

ineffabilityinefficaciesinefficiencyunaffectedlyunaffiliatedunificationsuniformitiesunofficiallyineffaceableunaffordableunifoliolateineffaceablyinefficientssniffinessessniffishness

About this list

Words
15 (8 common words)
Common example
ineffability
Rare example
sniffishness
Doubled letters
12
Ending in S
6

Questions

How many 12-letter words matching _n_f________ are there?

15. 8 of them are common words.

What is a common example?

INEFFABILITY is among the common words in this set.