15-Letter Words Matching __M___T________

There are 12 15-letter words that match __M___T________. 5 are common words, such as COMFORTABLENESS and DEMONETIZATIONS. A rarer one is SEMIRETIREMENTS. 4 words contain a doubled letter.

Full list 12

comfortablenessdemonetizationsdemonstrativelyhumanitarianismtempestuousnessdemonstrabilityrumbustiousnessdemonstrationalimmunotherapiesremonetizationsremonstrativelysemiretirements

About this list

Words
12 (5 common words)
Common example
comfortableness
Rare example
semiretirements
Doubled letters
4
Ending in S
7

Questions

How many 15-letter words matching __m___t________ are there?

12. 5 of them are common words.

What is a common example?

COMFORTABLENESS is among the common words in this set.