13-Letter Words Matching _____M_____T_

There are 21 13-letter words that match _____M_____T_. 5 are common words, such as BANTAMWEIGHTS and DISSIMILARITY. A rarer one is SUPERMAJORITY. In this set, I is the most frequent open letter (18 words). 7 words contain a doubled letter.

Full list 21

bantamweightsdissimilarityexcommunicatenoncombatantssomnambulistsachromaticityarchimandritecircumvallatenoctambulistsseptempartiteeconometristshypermobilitymisdemeanantsmultimegawattnoncommunistsnonimmigrantsphragmoplastsrecommitmentsreformabilitysubcomponentssupermajority

About this list

Words
21 (5 common words)
Common example
bantamweights
Rare example
supermajority
Doubled letters
7
Ending in S
11
Most frequent letter
I (18)

Questions

How many 13-letter words matching _____m_____t_ are there?

21. 5 of them are common words.

What is a common example?

BANTAMWEIGHTS is among the common words in this set.