14-Letter Words Matching S_______M_____

There are 12 14-letter words that match S_______M_____. 2 are common words, such as SEMIAUTOMATICS and SLEDGEHAMMERED. A rarer one is SUPERSYMMETRIC. In this set, E is the most frequent open letter (12 words). 4 words contain a doubled letter.

Full list 12

semiautomaticssledgehammeredspatiotemporalstoichiometricsuprasegmentalsaccharimeterssaccharometersspectinomycinssupercriminalssupernormalitysuperstimulatesupersymmetric

About this list

Words
12 (2 common words)
Common example
semiautomatics
Rare example
supersymmetric
Doubled letters
4
Ending in S
5
Most frequent letter
E (12)

Questions

How many 14-letter words matching s_______m_____ are there?

12. 2 of them are common words.

What is a common example?

SEMIAUTOMATICS is among the common words in this set.