12-Letter Words Matching F_S_________

There are 14 12-letter words that match F_S_________. 4 are common words, such as FASCINATIONS and FASHIONISTAS. A rarer one is FUSTIGATIONS. In this set, I is the most frequent open letter (14 words). 3 words contain a doubled letter.

Full list 14

fascinationsfashionistasfastidiouslyfusibilitiesfissirostralfascicularlyfasciculatedfascioliasesfascioliasisfashionablesfestivalgoerfestooneriesfissionablesfustigations

About this list

Words
14 (4 common words)
Common example
fascinations
Rare example
fustigations
Doubled letters
3
Ending in S
9
Most frequent letter
I (14)

Questions

How many 12-letter words matching f_s_________ are there?

14. 4 of them are common words.

What is a common example?

FASCINATIONS is among the common words in this set.