11-Letter Words Matching _____F___A_

There are 12 11-letter words that match _____F___A_. 3 are common words, such as NONOFFICIAL and SACRIFICIAL. A rarer one is TOPLOFTICAL. In this set, I is the most frequent open letter (12 words). 2 words contain a doubled letter.

Full list 12

nonofficialsacrificialsuperficialinterfacialnullifidianmicrofaunaemicrofaunalmicrofaunasmicrofloraemicrofloralmicroflorastoploftical

About this list

Words
12 (3 common words)
Common example
nonofficial
Rare example
toploftical
Doubled letters
2
Ending in S
2
Most frequent letter
I (12)

Questions

How many 11-letter words matching _____f___a_ are there?

12. 3 of them are common words.

What is a common example?

NONOFFICIAL is among the common words in this set.