10-Letter Words Matching ____S__F__

There are 20 10-letter words that match ____S__F__. 9 are common words, such as DOWNSHIFTS and FLAGSTAFFS. A rarer one is ROCKSHAFTS. 9 words contain a doubled letter.

Full list 20

downshiftsflagstaffsfoodstuffsgearshiftsmakeshiftspikestaffswaitstaffswindsurfedwindsurfercrossruffsfeedstuffsoverstuffsuntastefulblueshiftsbodysurfedbodysurfercowlstaffsendosulfanoverstaffsrockshafts

About this list

Words
20 (9 common words)
Common example
downshifts
Rare example
rockshafts
Doubled letters
9
Ending in S
14

Questions

How many 10-letter words matching ____s__f__ are there?

20. 9 of them are common words.

What is a common example?

DOWNSHIFTS is among the common words in this set.