13-Letter Words Matching __T________M_

There are 12 13-letter words that match __T________M_. 2 are common words, such as ANTISEMITISMS and METAMORPHISMS. A rarer one is ULTRAREALISMS. In this set, I is the most frequent open letter (12 words). 0 words contain a doubled letter.

Full list 12

antisemitismsmetamorphismsantepenultimaantifeminismsautomorphismsintuitionismsantiblackismsantihumanismsantinepotismsmetasomatismsultraleftismsultrarealisms

About this list

Words
12 (2 common words)
Common example
antisemitisms
Rare example
ultrarealisms
Doubled letters
0
Ending in S
11
Most frequent letter
I (12)

Questions

How many 13-letter words matching __t________m_ are there?

12. 2 of them are common words.

What is a common example?

ANTISEMITISMS is among the common words in this set.