10-Letter Words Matching ___F___O__

There are 20 10-letter words that match ___F___O__. 12 are common words, such as BEDFELLOWS and COFFEEPOTS. A rarer one is TUFFACEOUS. In this set, S is the most frequent open letter (19 words). 10 words contain a doubled letter.

Full list 20

bedfellowscoffeepotsconfessorsconfusionsdiffusionsdriftwoodsgyrfalconsnonferrousperfidiousprofessorsprofusionssuffusionschifforobegerfalconsperfusionsuniflorousconfiteorsmisfeasorsnonfactorstuffaceous

About this list

Words
20 (12 common words)
Common example
bedfellows
Rare example
tuffaceous
Doubled letters
10
Ending in S
19
Most frequent letter
S (19)

Questions

How many 10-letter words matching ___f___o__ are there?

20. 12 of them are common words.

What is a common example?

BEDFELLOWS is among the common words in this set.