12-Letter Words Matching S_S_________

There are 22 12-letter words that match S_S_________. 6 are common words, such as SISTERLINESS and SUSPICIOUSLY. A rarer one is SYSTEMATIZER. In this set, I is the most frequent open letter (21 words). 4 words contain a doubled letter.

Full list 22

sisterlinesssuspiciouslysystematicalsystematizedsystematizessystemicallysesquialterasustainmentssustentationsusceptivitysuspenselesssuspensivelysuspensoriessuspicioningsuspirationssustentativesusurrationssystematisedsystematisessystematismssystematistssystematizer

About this list

Words
22 (6 common words)
Common example
sisterliness
Rare example
systematizer
Doubled letters
4
Ending in S
10
Most frequent letter
I (21)

Questions

How many 12-letter words matching s_s_________ are there?

22. 6 of them are common words.

What is a common example?

SISTERLINESS is among the common words in this set.