12-Letter Words Matching F_____O_____

There are 24 12-letter words that match F_____O_____. 9 are common words, such as FIELDWORKERS and FIREPROOFING. A rarer one is FRACTIONATOR. In this set, R is the most frequent open letter (21 words). 9 words contain a doubled letter.

Full list 24

fieldworkersfireproofingforeclosuresforegroundedforeshortensforethoughtsforthcomingsfractionallyfunctionallyfibrinolysesfibrinolysinfibrinolysisfissirostralfootsloggingfractionatedfractionatesfrictionallyfrictionlessfunctionlessfanfaronadesfetoproteinsfibrinolyticfootsloggersfractionator

About this list

Words
24 (9 common words)
Common example
fieldworkers
Rare example
fractionator
Doubled letters
9
Ending in S
13
Most frequent letter
R (21)

Questions

How many 12-letter words matching f_____o_____ are there?

24. 9 of them are common words.

What is a common example?

FIELDWORKERS is among the common words in this set.