15-Letter Words Matching F___________S__

There are 24 15-letter words that match F___________S__. 12 are common words, such as FACETIOUSNESSES and FAITHLESSNESSES. A rarer one is FORTUNATENESSES. In this set, S is the most frequent open letter (24 words). 21 words contain a doubled letter.

Full list 24

facetiousnessesfaithlessnessesfaultlessnessesferociousnessesfoolhardinessesforgetfulnessesfractiousnessesfrightfulnessesfrivolousnessesfruitlessnessesfundamentalismsfundamentalistsfavorablenessesferromagnetismsfugaciousnessesfanaticalnessesfatheadednessesfeloniousnessesfencelessnessesferrimagnetismsferromanganesesfloriculturistsforgivingnessesfortunatenesses

About this list

Words
24 (12 common words)
Common example
facetiousnesses
Rare example
fortunatenesses
Doubled letters
21
Ending in S
24
Most frequent letter
S (24)

Questions

How many 15-letter words matching f___________s__ are there?

24. 12 of them are common words.

What is a common example?

FACETIOUSNESSES is among the common words in this set.