9-Letter Words Matching ____OF___

There are 16 9-letter words that match ____OF___. 5 are common words, such as HYDROFOIL and MICROFILM. A rarer one is UNROOFING. In this set, R is the most frequent open letter (13 words). 4 words contain a doubled letter.

Full list 16

hydrofoilmicrofilmretrofireretrofitsturbofansbromoformretroflexstyrofoamenfeoffedinfeoffedintrofiedintrofiesmicroformpantoflesreroofingunroofing

About this list

Words
16 (5 common words)
Common example
hydrofoil
Rare example
unroofing
Doubled letters
4
Ending in S
4
Most frequent letter
R (13)

Questions

How many 9-letter words matching ____of___ are there?

16. 5 of them are common words.

What is a common example?

HYDROFOIL is among the common words in this set.