10-Letter Words Matching ____L___M_

There are 12 10-letter words that match ____L___M_. 7 are common words, such as BERYLLIUMS and BUBBLEGUMS. A rarer one is STILLROOMS. In this set, S is the most frequent open letter (12 words). 10 words contain a doubled letter.

Full list 12

berylliumsbubblegumsmeddlesomemettlesomenettlesomeoccultismsthralldomscuddlesomegrillroomsbotulinumsbunglesomestillrooms

About this list

Words
12 (7 common words)
Common example
berylliums
Rare example
stillrooms
Doubled letters
10
Ending in S
7
Most frequent letter
S (12)

Questions

How many 10-letter words matching ____l___m_ are there?

12. 7 of them are common words.

What is a common example?

BERYLLIUMS is among the common words in this set.