Fun, my friend.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern ---F--FFS. That is, nine letter words with 4th letter F and 7th letter F and 8th letter F and 9th letter S. In alphabetical order, they are: bumfluffs niffnaffs riffraffs
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern C--F-F---. That is, nine letter words with 1st letter C and 4th letter F and 6th letter F. In alphabetical order, they are: carfuffle cuffuffle curfuffle
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern F---F-C--. That is, nine letter words with 1st letter F and 5th letter F and 7th letter C. In alphabetical order, they are: fairfaced forefaces fullfaces
A nine letter word using those letters is foresight.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern ---IFF---. That is, nine letter words with 4th letter I and 5th letter F and 6th letter F. In alphabetical order, they are: squiffers squiffier tariffing
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern --FF---G-. That is, nine letter words with 3rd letter F and 4th letter F and 8th letter G. In alphabetical order, they are: mafflings rufflings wafflings
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern C------FF. That is, nine letter words with 1st letter C and 8th letter F and 9th letter F. In alphabetical order, they are: cowlstaff creampuff crossruff
off,
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern AM---F---. That is, nine letter words with 1st letter A and 2nd letter M and 6th letter F. In alphabetical order, they are: amplified amplifier amplifies
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern -A-D-F---. That is, nine letter words with 2nd letter A and 4th letter D and 6th letter F. In alphabetical order, they are: dandified dandifies dandyfunk
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern -A--F-N--. That is, nine letter words with 2nd letter A and 5th letter F and 7th letter N. In alphabetical order, they are: califonts latifondi packfongs
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern F---IB---. That is, nine letter words with 1st letter F and 5th letter I and 6th letter B. In alphabetical order, they are: fencibles fillibegs fungibles