13-Letter Words Matching S_______M____

There are 14 13-letter words that match S_______M____. 2 are common words, such as SEMIAUTOMATIC and SLEDGEHAMMERS. A rarer one is SUPERSYMMETRY. In this set, E is the most frequent open letter (13 words). 7 words contain a doubled letter.

Full list 14

semiautomaticsledgehammerssaccharometerstoichiometrystratocumulussaccharimetersaccharomycesspectinomycinstablishmentssubmillimetersupercriminalsupernormallysuperpremiumssupersymmetry

About this list

Words
14 (2 common words)
Common example
semiautomatic
Rare example
supersymmetry
Doubled letters
7
Ending in S
5
Most frequent letter
E (13)

Questions

How many 13-letter words matching s_______m____ are there?

14. 2 of them are common words.

What is a common example?

SEMIAUTOMATIC is among the common words in this set.