4-Letter Words Matching _IF_

There are 16 4-letter words that match _IF_. 12 are common words, such as FIFE and GIFT. A rarer one is RIFS. In this set, F is the most frequent open letter (7 words). 6 words contain a doubled letter.

Full list 16

fifegiftjifflifeliftmiffriferiffriftsifttiffwifebiffniffkifsrifs

About this list

Words
16 (12 common words)
Common example
fife
Rare example
rifs
Doubled letters
6
Ending in S
2
Most frequent letter
F (7)

Questions

How many 4-letter words matching _if_ are there?

16. 12 of them are common words.

What is a common example?

FIFE is among the common words in this set.