9-Letter Words Matching _____E__M

There are 17 9-letter words that match _____E__M. 5 are common words, such as ANTISERUM and ARBORETUM. A rarer one is UNFREEDOM. In this set, I is the most frequent open letter (11 words). 5 words contain a doubled letter.

Full list 17

antiserumarboretumbubblegumpantheismprincedomantivenombeadledombumbledomequisetumhippiedomjunglegymsquiredomtritheismyuppiedomchazzenimmisoneismunfreedom

About this list

Words
17 (5 common words)
Common example
antiserum
Rare example
unfreedom
Doubled letters
5
Ending in S
0
Most frequent letter
I (11)

Questions

How many 9-letter words matching _____e__m are there?

17. 5 of them are common words.

What is a common example?

ANTISERUM is among the common words in this set.