12-Letter Words Matching ___I_M______

There are 19 12-letter words that match ___I_M______. 7 are common words, such as AFFIRMATIONS and AFFIRMATIVES. A rarer one is SCHISMATIZES. In this set, I is the most frequent open letter (18 words). 4 words contain a doubled letter.

Full list 19

affirmationsaffirmativesastigmatismschairmanshipchoirmastersnumismatistsradiometriessociometriessociometristaudiometrieschairmanningchrismationsgoniometriesmoviemakingsnonimmigrantradiomimeticschismaticalschismatizedschismatizes

About this list

Words
19 (7 common words)
Common example
affirmations
Rare example
schismatizes
Doubled letters
4
Ending in S
12
Most frequent letter
I (18)

Questions

How many 12-letter words matching ___i_m______ are there?

19. 7 of them are common words.

What is a common example?

AFFIRMATIONS is among the common words in this set.