12-Letter Words Matching ____M___R___

There are 17 12-letter words that match ____M___R___. 5 are common words, such as ANTIMALARIAL and HEADMISTRESS. A rarer one is THERMOFORMED. In this set, I is the most frequent open letter (14 words). 5 words contain a doubled letter.

Full list 17

antimalarialheadmistressperemptorilypostmistresstaskmistressalbuminuriasdisembarrassparameterizethaumaturgiccytomembranedopaminergicnonimmigrantovermaturitysalamandrinetelemeteringthaumaturgesthermoformed

About this list

Words
17 (5 common words)
Common example
antimalarial
Rare example
thermoformed
Doubled letters
5
Ending in S
6
Most frequent letter
I (14)

Questions

How many 12-letter words matching ____m___r___ are there?

17. 5 of them are common words.

What is a common example?

ANTIMALARIAL is among the common words in this set.