7-Letter Words Matching _I__F__

There are 20 7-letter words that match _I__F__. 11 are common words, such as DIREFUL and FIREFLY. A rarer one is VIVIFIC. In this set, L is the most frequent open letter (13 words). 8 words contain a doubled letter.

Full list 20

direfulfireflyfistfulgiraffemindfulpilaffspitifulripoffswillfulwishfulwistfulpiaffespipefuldishfulkistfullifefulpiaffedpiaffertipoffsvivific

About this list

Words
20 (11 common words)
Common example
direful
Rare example
vivific
Doubled letters
8
Ending in S
4
Most frequent letter
L (13)

Questions

How many 7-letter words matching _i__f__ are there?

20. 11 of them are common words.

What is a common example?

DIREFUL is among the common words in this set.