14-Letter Words Matching T_____U_______

There are 13 14-letter words that match T_____U_______. 9 are common words, such as TASTEFULNESSES and THANKFULNESSES. A rarer one is TRISTFULNESSES. 8 words contain a doubled letter.

Full list 13

tastefulnessesthankfulnessestimorousnessestortuousnessestranslucenciestransmutationstriangulationstrustfulnessestruthfulnessestumultuousnesstranscutaneoustransductionaltristfulnesses

About this list

Words
13 (9 common words)
Common example
tastefulnesses
Rare example
tristfulnesses
Doubled letters
8
Ending in S
12

Questions

How many 14-letter words matching t_____u_______ are there?

13. 9 of them are common words.

What is a common example?

TASTEFULNESSES is among the common words in this set.