12-Letter Words Matching _____I_S____

There are 13 12-letter words that match _____I_S____. 4 are common words, such as CONNOISSEURS and INADMISSIBLE. A rarer one is UNDERINSURED. In this set, S is the most frequent open letter (12 words). 8 words contain a doubled letter.

Full list 13

connoisseursinadmissiblemanumissionsreadmissionsbasidiosporecaptainshipsinadmissiblyirremissiblepumpkinseedsantimissilesbabesiosisesgangliosidesunderinsured

About this list

Words
13 (4 common words)
Common example
connoisseurs
Rare example
underinsured
Doubled letters
8
Ending in S
8
Most frequent letter
S (12)

Questions

How many 12-letter words matching _____i_s____ are there?

13. 4 of them are common words.

What is a common example?

CONNOISSEURS is among the common words in this set.