12-Letter Words Matching ____I_____M_

There are 14 12-letter words that match ____I_____M_. 3 are common words, such as CANNIBALISMS and CLERICALISMS. A rarer one is HOMOIOTHERMS. In this set, S is the most frequent open letter (11 words). 3 words contain a doubled letter.

Full list 14

cannibalismsclericalismshooliganismsarchiphonemeorchidectomyphysicalismsprimitivismssalpingotomysyndicalismstonsillotomycypripediumseudaimonismsgingivectomyhomoiotherms

About this list

Words
14 (3 common words)
Common example
cannibalisms
Rare example
homoiotherms
Doubled letters
3
Ending in S
9
Most frequent letter
S (11)

Questions

How many 12-letter words matching ____i_____m_ are there?

14. 3 of them are common words.

What is a common example?

CANNIBALISMS is among the common words in this set.