11-Letter Words Matching __F_____S__

There are 12 11-letter words that match __F_____S__. 10 are common words, such as AWFULNESSES and DAFFINESSES. A rarer one is REFUGEEISMS. In this set, I is the most frequent open letter (11 words). 11 words contain a doubled letter.

Full list 12

awfulnessesdaffinessesheftinesseshuffinessesloftinessesnefariouslyofficiouslypuffinessessuffragistsunfitnessesruffianismsrefugeeisms

About this list

Words
12 (10 common words)
Common example
awfulnesses
Rare example
refugeeisms
Doubled letters
11
Ending in S
10
Most frequent letter
I (11)

Questions

How many 11-letter words matching __f_____s__ are there?

12. 10 of them are common words.

What is a common example?

AWFULNESSES is among the common words in this set.