11-Letter Words Matching _____E____M

There are 12 11-letter words that match _____E____M. 3 are common words, such as DESIDERATUM and EINSTEINIUM. A rarer one is SCATTERGRAM. In this set, I is the most frequent open letter (10 words). 5 words contain a doubled letter.

Full list 12

desideratumeinsteiniumquadrenniumantependiumendometriumfrotteurismimmanentismirredentismperineuriumphraseogramantirealismscattergram

About this list

Words
12 (3 common words)
Common example
desideratum
Rare example
scattergram
Doubled letters
5
Ending in S
0
Most frequent letter
I (10)

Questions

How many 11-letter words matching _____e____m are there?

12. 3 of them are common words.

What is a common example?

DESIDERATUM is among the common words in this set.