12-Letter Words Matching _______F___S

There are 19 12-letter words that match _______F___S. 7 are common words, such as AFTEREFFECTS and CHICKENFEEDS. A rarer one is THIOSULFATES. In this set, E is the most frequent open letter (18 words). 3 words contain a doubled letter.

Full list 19

aftereffectschickenfeedscounterfeitscounterfoilselectrifiersintensifierswindsurfingscounterfirescounterflowsdenitrifiersdiversifierselectroformsindemnifiersoverfulfillspersonifierspolysulfidesretransformssuperinfectsthiosulfates

About this list

Words
19 (7 common words)
Common example
aftereffects
Rare example
thiosulfates
Doubled letters
3
Ending in S
19
Most frequent letter
E (18)

Questions

How many 12-letter words matching _______f___s are there?

19. 7 of them are common words.

What is a common example?

AFTEREFFECTS is among the common words in this set.