7-Letter Words Matching _O___F_

There are 15 7-letter words that match _O___F_. 7 are common words, such as FORTIFY and HORRIFY. A rarer one is ZOMBIFY. In this set, I is the most frequent open letter (13 words). 9 words contain a doubled letter.

Full list 15

fortifyhorrifylogoffslowlifemollifymortifypontiffjollifytorrefyboiloffcoalifygoniffsnonlifetorrifyzombify

About this list

Words
15 (7 common words)
Common example
fortify
Rare example
zombify
Doubled letters
9
Ending in S
2
Most frequent letter
I (13)

Questions

How many 7-letter words matching _o___f_ are there?

15. 7 of them are common words.

What is a common example?

FORTIFY is among the common words in this set.