8-Letter Words Matching ____TF__

There are 18 8-letter words that match ____TF__. 7 are common words, such as BOASTFUL and CHESTFUL. A rarer one is VAUNTFUL. In this set, U is the most frequent open letter (17 words). 2 words contain a doubled letter.

Full list 18

boastfulchestfuldoubtfuleventfulfruitfulrightfultrustfulsnootfulfeastfulghastfullightfulmoistfulreoutfitsheetfedsportfultristfulunartfulvauntful

About this list

Words
18 (7 common words)
Common example
boastful
Rare example
vauntful
Doubled letters
2
Ending in S
0
Most frequent letter
U (17)

Questions

How many 8-letter words matching ____tf__ are there?

18. 7 of them are common words.

What is a common example?

BOASTFUL is among the common words in this set.