11-Letter Words Matching T____M_____

There are 20 11-letter words that match T____M_____. 10 are common words, such as TACHOMETERS and TESTIMONIAL. A rarer one is TRUCKMASTER. In this set, R is the most frequent open letter (18 words). 3 words contain a doubled letter.

Full list 20

tachometerstestimonialtestimoniestetrameterstoastmastertrademarkedtransmittaltransmittedtransmittertransmutingtauromachictautomerismtensimeterstransmarinetrigeminalstastemakerstetrameroustitrimetrictropomyosintruckmaster

About this list

Words
20 (10 common words)
Common example
tachometers
Rare example
truckmaster
Doubled letters
3
Ending in S
7
Most frequent letter
R (18)

Questions

How many 11-letter words matching t____m_____ are there?

20. 10 of them are common words.

What is a common example?

TACHOMETERS is among the common words in this set.