9-Letter Words Matching ______FF_

There are 18 9-letter words that match ______FF_. 9 are common words, such as BLASTOFFS and BRUSHOFFS. A rarer one is RIFFRAFFS. In this set, S is the most frequent open letter (16 words). 18 words contain a doubled letter.

Full list 18

blastoffsbrushoffscheckoffsdandruffsdyestuffshandcuffsknockoffsstandoffstradeoffsdandruffytipstaffswoodruffscalctuffsdandriffsoutbluffsoverruffsrechaufferiffraffs

About this list

Words
18 (9 common words)
Common example
blastoffs
Rare example
riffraffs
Doubled letters
18
Ending in S
16
Most frequent letter
S (16)

Questions

How many 9-letter words matching ______ff_ are there?

18. 9 of them are common words.

What is a common example?

BLASTOFFS is among the common words in this set.