14-Letter Words Matching _________M_T__

There are 20 14-letter words that match _________M_T__. 2 are common words, such as UNDERESTIMATED and UNDERESTIMATES. A rarer one is TETRAGRAMMATON. In this set, R is the most frequent open letter (20 words). 6 words contain a doubled letter.

Full list 20

underestimatedunderestimatesdiffractometerinterferometerinterferometryintervalometerorthochromaticphotogrammetryproceleusmaticpsychodramaticpyrophotometerscintillometercytophotometrydiffractometryelectroosmoticmultiparameternoncharismaticpresymptomaticradiotelemetrytetragrammaton

About this list

Words
20 (2 common words)
Common example
underestimated
Rare example
tetragrammaton
Doubled letters
6
Ending in S
1
Most frequent letter
R (20)

Questions

How many 14-letter words matching _________m_t__ are there?

20. 2 of them are common words.

What is a common example?

UNDERESTIMATED is among the common words in this set.