12-Letter Words Matching F_______R___

There are 13 12-letter words that match F_______R___. 4 are common words, such as FAINTHEARTED and FLUOROCARBON. A rarer one is FRITILLARIAS. In this set, I is the most frequent open letter (11 words). 3 words contain a doubled letter.

Full list 13

faintheartedfluorocarbonforeswearingforgatheringfeatherbrainfluidextractfluviomarinefritillariesfructiferousfutilitarianfestooneriesfluorochromefritillarias

About this list

Words
13 (4 common words)
Common example
fainthearted
Rare example
fritillarias
Doubled letters
3
Ending in S
4
Most frequent letter
I (11)

Questions

How many 12-letter words matching f_______r___ are there?

13. 4 of them are common words.

What is a common example?

FAINTHEARTED is among the common words in this set.