12-Letter Words Matching ________M_T_

There are 21 12-letter words that match ________M_T_. 2 are common words, such as ILLEGITIMATE and OVERESTIMATE. A rarer one is WITENAGEMOTS. 2 words contain a doubled letter.

Full list 21

illegitimateoverestimatehellgrammiteheterogameteinconformitymacroclimatemicroclimatemultiformitypseudonymityunconformityaerenchymatachromonematahemangiomataheterogametymeningiomatamonochromatsmycoplasmataparenchymatapiroplasmatawitenagemotewitenagemots

About this list

Words
21 (2 common words)
Common example
illegitimate
Rare example
witenagemots
Doubled letters
2
Ending in S
2

Questions

How many 12-letter words matching ________m_t_ are there?

21. 2 of them are common words.

What is a common example?

ILLEGITIMATE is among the common words in this set.