13-Letter Words Matching _____M____A__

There are 13 13-letter words that match _____M____A__. 3 are common words, such as EXCOMMUNICATE and INCOMMUNICADO. A rarer one is ULTRAMILITANT. In this set, I is the most frequent open letter (12 words). 6 words contain a doubled letter.

Full list 13

excommunicateincommunicadointermarriagecircumvallateintermembraneintermountainmultimegawattneuraminidasenonnumericalssupermilitanttransmembranetransmountainultramilitant

About this list

Words
13 (3 common words)
Common example
excommunicate
Rare example
ultramilitant
Doubled letters
6
Ending in S
1
Most frequent letter
I (12)

Questions

How many 13-letter words matching _____m____a__ are there?

13. 3 of them are common words.

What is a common example?

EXCOMMUNICATE is among the common words in this set.