15-Letter Words Matching ____T_F________

There are 13 15-letter words that match ____T_F________. 8 are common words, such as BEAUTIFICATIONS and BOUNTIFULNESSES. A rarer one is UNDUTIFULNESSES. 6 words contain a doubled letter.

Full list 13

beautificationsbountifulnesseshealthfulnessesidentificationsquantificationssanctificationsstratificationsstultificationsfructificationsplentifulnessesbeautifulnessesprettificationsundutifulnesses

About this list

Words
13 (8 common words)
Common example
beautifications
Rare example
undutifulnesses
Doubled letters
6
Ending in S
13

Questions

How many 15-letter words matching ____t_f________ are there?

13. 8 of them are common words.

What is a common example?

BEAUTIFICATIONS is among the common words in this set.