9-Letter Words Matching ___S____M

There are 25 9-letter words that match ___S____M. 8 are common words, such as CLASSROOM and CROSSBEAM. A rarer one is OPUSCULUM. In this set, E is the most frequent open letter (18 words). 10 words contain a doubled letter.

Full list 25

Common words

classroomcrossbeamecosystemmausoleummidstreampessimismpresidiumsubsystemairstreambursiformgelsemiumguestroom
classroomcrossbeamecosystemmausoleummidstreampessimismpresidiumsubsystemairstreambursiformgelsemiumguestroomhirsutismhouseroomkaiserdomkaiserismkissogrammarsupiummenstruumpassivismpressroomsensillumsensoriumnonsystemopusculum

About this list

Words
25 (8 common words)
Common example
classroom
Rare example
opusculum
Doubled letters
10
Ending in S
0
Most frequent letter
E (18)

Questions

How many 9-letter words matching ___s____m are there?

25. 8 of them are common words.

What is a common example?

CLASSROOM is among the common words in this set.