12-Letter Words Matching ___F_I______

There are 20 12-letter words that match ___F_I______. 13 are common words, such as COEFFICIENTS and CRAFTINESSES. A rarer one is SPIFFINESSES. In this set, N is the most frequent open letter (17 words). 16 words contain a doubled letter.

Full list 20

coefficientscraftinessesdraftinessesfluffinessesinefficaciesinefficiencyprofligaciesprofligatelyshiftinessesstuffinessestraffickingsunaffiliatedunofficiallytrafficatorsconflictionsinefficientsnonfrivoloussniffinessessniffishnessspiffinesses

About this list

Words
20 (13 common words)
Common example
coefficients
Rare example
spiffinesses
Doubled letters
16
Ending in S
16
Most frequent letter
N (17)

Questions

How many 12-letter words matching ___f_i______ are there?

20. 13 of them are common words.

What is a common example?

COEFFICIENTS is among the common words in this set.