10-Letter Words Matching ___S_____A

There are 18 10-letter words that match ___S_____A. 4 are common words, such as ANESTHESIA and DIPSOMANIA. A rarer one is SINSEMILLA. In this set, I is the most frequent open letter (14 words). 4 words contain a doubled letter.

Full list 18

anesthesiadipsomaniapresbyopiaquesadilladrosophilagypsophilaicosahedraleishmaniamassasaugamyastheniapipsissewablastematablastomataclostridiadiastematafatshederasensibiliasinsemilla

About this list

Words
18 (4 common words)
Common example
anesthesia
Rare example
sinsemilla
Doubled letters
4
Ending in S
0
Most frequent letter
I (14)

Questions

How many 10-letter words matching ___s_____a are there?

18. 4 of them are common words.

What is a common example?

ANESTHESIA is among the common words in this set.