13-Letter Words Matching T_U__________

There are 13 13-letter words that match T_U__________. 5 are common words, such as THUNDERCLOUDS and THUNDERSHOWER. A rarer one is TSUTSUGAMUSHI. In this set, S is the most frequent open letter (13 words). 2 words contain a doubled letter.

Full list 13

thundercloudsthundershowerthunderstormsthunderstrucktrustworthiertautologouslythundersquallthunderstonesthunderstrikethunderstroketouristicallytrustworthilytsutsugamushi

About this list

Words
13 (5 common words)
Common example
thunderclouds
Rare example
tsutsugamushi
Doubled letters
2
Ending in S
3
Most frequent letter
S (13)

Questions

How many 13-letter words matching t_u__________ are there?

13. 5 of them are common words.

What is a common example?

THUNDERCLOUDS is among the common words in this set.