8-Letter Words Matching M____F__

There are 16 8-letter words that match M____F__. 8 are common words, such as MASTIFFS and MERCIFUL. A rarer one is MOISTFUL. In this set, I is the most frequent open letter (13 words). 3 words contain a doubled letter.

Full list 16

mastiffsmercifulmidriffsmidwifedmidwifesmirthfulmournfulmouthfulmagnificmorbificmultifidmellificmensefulmisinfermisrefermoistful

About this list

Words
16 (8 common words)
Common example
mastiffs
Rare example
moistful
Doubled letters
3
Ending in S
3
Most frequent letter
I (13)

Questions

How many 8-letter words matching m____f__ are there?

16. 8 of them are common words.

What is a common example?

MASTIFFS is among the common words in this set.